R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ... R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5, R.-8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 2 resistor, given that R, = 22 3 | Page ID NUMBER:.. I-8 A Fig 4 I = 14) Calculate the current in the 2 resistor, given R,= 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. ID NUMBER:. 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = . I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = . 26) Find the current in the second loop I, (use mesh analysis method) 1,= . 27) Find the current in the third loop I: (use mesh analysis method) I= . 4G 3G O 66 I 2:57 Exams.docx 7|Page ID NUMBER:. Section B Attempt all questions in this section in the answer booklet provided. Question 1 [10 marks] a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 | Page O 66 I 2:57 4G 3G Exams.docx 8 | Page ID NUMBER:. Question 2 [20 marks] a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3. Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user. Give three advantages and disadvantages of both systems. GOOD LUCK 9| Page 4G ll A O O 67I 2:56 Exams.docx 团: 6| Page ID NUMBER:. A-d R. 1-A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R,=22, R = 62, R; = 32 R, R, R = 29) Transform Fig 11b to Fig 11la given R. = 32, R.=32, R. = 3N R = R2 R, = 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12. 50 10 0 12 Q -4 V 15 0 6 V Figure 12 Vu = 7|Page 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:.. 30 2 60 2 R2 30 2 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I = 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR = 22) A 230 V lamp is rated to pass a current of 0.26 A. Calculate its power outpu P = 23) A current of 3 A flows through a 102 resistor. Find the power developed by resistor. P = 5| Page ID NUMBER:.. 4G ll A O O 67 2:55 Exams.docx 团: R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, = 8, R2 = 3, R, = 5, R.=8 a. Rr = 13) A current of 8 A is shared between two resistors in the network shown in Fig. 4 Calculate the current in the 2 Q resistor, given that R,= 20 3 |Page ID NUMBER:.. -8 A 12 R2 Fig 4 I = 14) Calculate the current in the 20 resistor, given R,= 42 in fig 4 =3 A 主 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig. 5. 4G ll A O O 67I 2:56 Exams.docx ID NUMBER:. 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, = I, = 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, = 26) Find the current in the second loop I, (use mesh analysis method) I= .... 27) Find the current in the third loop I (use mesh analysis method) I= 6| Page ID NUMBER: 4G O 67I 2:56 Exams.docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig. 5. For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is. 4 | Page ID NUMBER:.. 1, R1 30 2 -- 60 2 R2 R3 30 2 12 I=1 A Figure 6 19) For the network shown in fig 6 find I, I, =. 20) For the network shown in fig 6 find I, I = O 67 || 2:55 Exams.docx 7. Consider these two scenarios and comment on the reason for the observations. Scenario 1: A bird standing on a bare energized high tension is not electrocuted Scenario 2: A human being touching a bare live wire without any protection is electrocuted. 2|Page ID NUMBER:. 3.502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle. 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,=........ Figure 3 12) Find the total resistance of the circuit in figure 3 given R. = 8, R: = 3, R, = 5, R.=8 a. R= ........ ...
Expert Answer:
Answer rating: 100% (QA)
question 3 Flowing water creates energy that can be captured and turned into electricity This is cal... View the full answer
Related Book For
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett
Posted Date:
Students also viewed these electrical engineering questions
-
Find the equivalent resistance of the circuit infigure. 30 V 18 0 9.0 2 12 0 6.0 N
-
Find (a) the equivalent resistance of the circuit in figure,(b) Each current in the circuit,(c) The potential difference across each resistor, and(d) The power dissipated by eachresistor. 6.0 N 2.4 N...
-
(a) Find the equivalent resistance of the circuit in figure.(b) If the total power supplied to the circuit is 4.00 W, find the emf of thebattery. 10.0 N 4.00 N 5.00 2 3.00 N 3.00 N
-
4. In St. Albert, Alberta, there are two bakers, Anderson and Carlson. Anderson's bread tastes just like Carlson's. Anderson has average costs of $1 per loaf of bread. Carlson has average costs of $2...
-
Show that the circuit in Fig. 6.90 is a noninverting integrator. wi
-
In January 1980, the CPI stood at 77.8, and by January 2006, it was 198.3. By what percent have consumer prices increased over this period? Assume college graduates entering the job market were being...
-
Suppose an investor has utility function $U$. There are $n$ risky assets with rates of return $r_{i}, i=1,2, \ldots, n$, and one risk-free asset with rate of return $r_{f}$. The investor has initial...
-
In 2010, Amir ante Corporation had pretax financial income of $168,000 and taxable income of $120,000. The difference is due to the use of different depreciation methods for tax and accounting...
-
Riverwood Accounting Company has the following account in its cost records: Work in Process Jones Audit Direct labor 2 0 0 , 0 0 0 Services completed 4 2 2 , 5 3 0 Project overhead 2 7 0 , 0 0 0...
-
Tele Telcom, Inc. is a medium-sized company that produces automotive parts. The company has been in business for over 50 years and has a workforce of approximately 500 employees. Recently, some...
-
1. Specifications for a piece of material used in the manufacture of a bed mattress require that the piece be between 59.28 and 60.72 inches. The process that produces the piece yields a mean of 60...
-
When you speak, your voice sounds 10 dB louder to someone standing directly in front of you than to someone at the same distance but directly behind you. What is the ratio of the intensity of your...
-
In December 2021, General Electric (GE) had a book value of equity of \($40\) billion,1.1 billion shares outstanding, and a market price of \($94.47\) per share. GE also had cash of \($28\) billion,...
-
Some guitarists like the feel of a set of strings that all have the same tension. For such a guitar, the G string (196 Hz) has a mass density of 0.31 g/m. What is the mass density of the A string...
-
From a distance of 4.0 m, a bystander listens to a jackhammer breaking concrete. How far would he need to move from the jackhammer so that its perceived loudness decreases by a factor of 8?
-
The worlds most powerful laser is the LFEX laser in Japan. It can produce a 2 petawatt 12 10 15 W 2 laser pulse that last for 1 ps. The laser is focused onto a small spot that is 30 m in diameter....
-
Hypothetical facts involving structuring of a tax-free acquisition of XYZ corp. XYZ Corp has a value of $200,000,000 and has a capital structure comprised of 200,000,000 issued and outstanding shares...
-
Suppose you won a financial literacy competition and are given FJS10000 to invest, with the condition that investment can be done either in, i) Invest in Unit trust of Fiji or Invest in Fijian...
-
An electron moving horizontally passes between two horizontal plates, the upper charged negatively, the lower positively. A uniform, upward-directed electric eld exists in the region between the...
-
A ray of light strikes the midpoint of one face of an equiangular (606060) glass prism (n = 1.5) at an angle of incidence of 30. (a) Trace the path of the light ray through the glass, and find the...
-
A light ray enters a rectangular block of plastic at an angle θ1 = 45.0° and emerges at an angle θ2 = 76.0°, as shown in figure. (a) Determine the index of...
-
True or False: The capital recovery cost is the uniform annual cost of the investment less the uniform annual worth of the salvage value.
-
When using annual worth to evaluate the attractiveness of a single alternative, what value is the calculated AW compared to? a. PW b. FW c. 0.0 d. MARR
-
True or False: If AW > 0, then PW > 0, and FW > 0.
Study smarter with the SolutionInn App