Mechanical Engineering Questions and Answers February 22, 2020

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3) Water enter the boiler in a steam power plant at a rate of 2kgs, a velocity of 12ms and an enthalpy of 650 KIKg where it absorbs 1850 KIKg. the water Turbine transform into steam, enter the turbine and exit having an enthalpy of 3710 KIKg and a velocity of 45 ms. the height difference between the inlet of the boiler and the the turbine exit is

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3) Water enter the boiler in a steam power plant at a rate of 2kgs, a velocity of 12ms and an enthalpy of 650 KIKg where it absorbs 1850 KIKg. the water Turbine transform into steam, enter the turbine and exit having an enthalpy of 3710 KIKg and a velocity of 45 ms. the height difference between the inlet of the boiler and the the turbine exit is

18. You have three identical capacitors, each 240 uF. They can create four different equivalent capacitances. Draw and label each possible circuit and calculate its equivalent capacitance. 80 F, 160 F, 360 F, 720 F) (be sure to be clear which calculation goes with which circuit)

Suppose that Florians demand for good Z is QDElaria, 24 3P and Saras demand is Qp Sara 32 4P. b) Draw each demand curve on the same graph. (Q on the horizontal axis and P on the vertical axis.) Do not forget to include the value of the intercepts on the vertical and horizontal axes for each curve. Label Florians demand curve Florian and Saras

Consider the sequential game depicted in the figure below. Player A moves first. She can charge either a high or low price for her good. Player B moves second, and she decides whether to enter the market. Profit A 290, B 100 Enter Player B Low price Profit Not Enter A 320, B 0 Player A Profit Enter A 280, B 120 High price Player B Not Profit Enter

Harrys visit to Gringotts (Consumer Theory) The Weasleys had just taken Harry to the Gringotts Wizarding Bank for the first time, where Harry discovers that he has received a large inheritance of m 1,900,000 galleons (the currency of the wizarding world) from his parents. Harry must decide how much to spend currently and how much to save for

4 Ohm ww 10 Ohm 20 Ohm 2. (a) What is the equivalent resistance of the circuit shown in the figure Hint it may help to redraw the circuit to see some basic connections. 12 Ohm 24 V (b) What is the power dissipated in the 10 Ohm resistor ww 8 Ohm ww

5.2 In the circuit of Fig. P5.2, the capacitors have the same value Cand all resistors ex cept one have the common value of R. Analyze the circuit to determine the transfer functions T. T, V, V. T and V, and classify each as lowpass, bandpass, bandstop, etc. R R R in R R R (20 1)R FIGURE P5.2 10

QUESTION 8 Given that, Cgs2, Rgs3, Load capacitance 4, Resistance seen from CL5, Rsig6 and Cgd is negligable. All are in Si unit. What is the 3dB corner frequency of a source follower if all the given values are in Si unit A. The correct answer is not given in other options B. 147pl OC. 145pi OD. 142pi

NAND can do it all Recall in our discussions that it is easiest to fabricate NAND gates when it comes to building a functioning integrated circuit. Now is your time to create a circuit using only NAND gates. 1. Using the function F (A B) (CD) Implement this function using AND and OR gates. Use the logic converter to assess your circuit. 2.

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Apply superposition theorem to find the current i, flowing in the drawn circuit. lo 10 KN 6 KQ 4 40 V 20 K2 20 A() 10 KO 10 A

10. What is the conductor ampacity required for a 20 kW, 240 volt central space heater 11. What is the ampacity of three No. 4 THWN conductors installed in an ambient temperature of 30 degree Celsius 12. What is the ampacity of three No. 30 conductors installed in freeair 13. What is the ampacity of eight 40 THHN conductors installed a raceway in

1. A 3phase, 60Hz transmission line is 50 km long and has r 0.20 Ohmskm and x 0.50 Ohmskm. The load at the receiving end of the line is 2.5 MW at a power factor of 0.9 leading. (i)Compute the impedance of the line, Zine at the lad take the lad vellage as 33KV llne to line. Van reference. (ii)Find the sending end current, I, (iii) What is the

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1. FSM design. Design a clocked synchronous state machine with one input X, and an output Z. Z is 1 if 010 sequence pattern has occurred in the input X Otherwise, the output should be 0. For solution a) Draw the state diagram. b) Write the stateoutput table. c) Choose a set of state variables, and derive excitation equations and output

9. Carrier signal in a double sideband carrier band system, c (t) Acos (2nfc t) and the message signal m(t) sinc (t) sinc (t) Find the frequency domain expression and bandwidth of the modulated signal.

Calculate the fraction of the original amplitude obtained when a 560 load is connected to the output via a coupling capacitor (Cout in Fig. 3) to ground. HINT the 5602 resistor will be in series with the output impedance of the circuit to ground. Even at only 15 kHz, the output capacitor acts as a wire for the ac impedance. It serves to block only

2. Figure 5 depicts how power is distributed from the power company to their customers through a combination of two transformers and a transmission line. The transmission line is shown to have a resistance equal to 20. N, and N, represent the number of turns on the primary or the secondary of the two transformers. i, is the current provided by

b) using the values of the capacitor, inductance and resistance, calculate the valies of the circuit peak to peak currents and write them down in the table. c) insert the resistance Rs as indicated in previous sections, to allow the current measurement of the source. measure the value of the peak to peak voltage Vrs and the resulting current and

10 Hz O Ilustracin 7 O E 8V (pp) R. IR 1kQ L 10 mH Ve C0.01 F

2. For the following eircuit a) Find the total number of stuckat0 and stuckat1 faults. Show your calculations. b) Reduce the total number of fault using the concept of fault equivalence. Show the total number of faults of the circuit and the final number of faults. c) Calculate the fault collapsing ratio (final number of faultstotal number of

(Practice Problem, No need to turn it in) Calculate vo(t) and io(t) for the follow ing circuit. 4 0.01 F 25 cos20 V 50E 0.4 H 0.02 F 5n v,(1)

1. In the following system, where, 201 s 1 1 D(s) kp G(s) s2 s 12 R(s) o E D(s) G(s) O Y(s) Sketch the root locus with respect to ky for the closed loop system. (include the asymptotus, departure or arrival angles, imaginaryaxis crossings, multiple roots (breakaway or breakin points), etc. Also mark aTows on the root locus to indicate the

If Vs 2 V, R1 6 ohms, R2 8 ohms, and R3 9 ohms, the current lo (in amperes) is a. 0.3333 b. 0.6698 C. 0.7222 d. 0.7685 . 0.8519 R1 R2

Given an RC lowpass filter with R200KN and C4uF and the bilinear transform equation as shown R 2 (1 z1) T, (1z1) Vin Vout Calculate a discrete filter approximation using a bilinear transformation in terms of T

620 V VB Find the two node voltages VA and VB and the output voltage Vo in the circuit j3 2 j2 2 120 A Vo 3 shown.

Sketch a flow chart (or write a pseudo code) showing the steps the routers take to Build a routing table using the link state approach Build a routing table using the distance vector approach

2) For the common collector amplifier, the transistor parameters are B120, VA 100V, V BEON 0.7V Find 9) gm, VT and to qVcc5V b) Draw the ac equivalent eir emt for Ve EQ the common collector Ribp Ribp K MGR. Ro Amplifier V () s R50 kv c) From the ac RE 31 KUZ eiveint, derive the voltage gain and show Au, calculate the voltage gain Av Vo

o316 Problems 3.22 Four concentric spherical shells of radii 0.2m, 0.4 m, 0.6 m, and 0,8 m are supporting uniform charge distributions of 10, 2, 0.5, and 0.5 Cm2, respectively. Determine the E field at a radius of (a) 0.1 m, (b) 0.3 m, (c) 0.5 m (d) 07 m and (e) lm.

Chapter 5, Problem 5.068 Use Thvenins theorem to find V, in the circuit in the figure below. Break the network just to the right of the vertical 5k Ohm resistor containing Ix. 5 V O 2 kn 2 Ix 7 ko 5 ko 9 ko Ix VTh V RTh k2 V. Click if you would like to Show Work for this question Open Show Work ,R1 R2 68 0 150 0 R3 R5 390 0 470 0 5V R4 100 0

The flexible loep in the figure balow has a radius of 15.0 om and is in a magnetic feld af magnitude D.LBO T. The loop is grasped at points A and and stretched until es arna s nearly zero. Ift takes 0.220 s to ciose the loop, what is the magnitude of the average induced enf in it during this time intervai

8. v is a 3V peaktopeak THz sine wave with 2v dc offset. Find vt on peaktopeak voltage Vcc12v RC 3k o Vout Vr0.6v RE 1k Vin 20 points

Determine the Efield caused by a spherical cloud of electrons with a volume charge density ,0

For the sample AC circuit 2 B. Determine 192 I(t) Zeq Vs(t) 10 cos (10t 90) V (Variations Changes in resistor and source values and directions).) Step 1 The voltage phasor VSF Step 2 The equivalent impedance Zeq Step 3 The phasor current IF Step 4 The steady state current l(t)ss Step 5 The complex power (S VSFIF P jQ). Step 6 The average (P)

Problem 2) The transistor shown in figure below has a threshold voltage of 1.5 volts and K 0.4 mAV . Assuming ve is a pulse signal with a minimum of 0 V to a maximum of 5 V, find the voltage levels of the obtained pulse signal at the drain output vp.

4. Let S be a linear, timeinvariant, and causal system whose input r(t) and corresponding output y(t) are shown below x(t) 2 3 Page 1 of 2 Please go to next page... y(t) 2 Je, t 0, t, t 0. 1 (a) Find the impulse response function h(t) of S. (b) Find the output of 8 when its input is r(t) ,4. Let S be a linear, timeinvariant, and causal system

12.13 In connection with the npnp device of Figure 12.21, it was stated that at low Vs, the recombination in the forwardbiased junction transition regions is significant. a. Explain why the recombination current is significant. b. When recombination cannot keep up with the carrier injection, what happens to the energy band diagram Explain why the

Problem 3.6.1 Given the random variable Y in Problem 3.4.1, let U g(Y) Y2. (a) Find Pu(u). (b) Find Fu(u). (c) Find EU.

For the circuit below. Z 1s a variable Impedance connected between (a) (b) Find the Thevenin equivalent circuit as seen by Z 60245 V 2245A () 6on j602 Adjust value of the load Z, such that the load average power is maximum and find P,(max)

3. Explain the physical origin of Latchup What is the result of this effect on VDD and Vss lines And how would you avoid Latchup in Bulk CMOS

R www Vc 35u(t)V Assume R1 20, R2 30, and C 0.33F. What is the steadystate value of VC (in V) for t 0s Points possible 1 Allowed attempts 3 Retry penalty 33.333 Find the Thevenin equivalent of the circuit about the capacitor for t 0. Assume the Thevenin equivalent voltage is defined so its negative terminal would be connected to the negative

Create the TF between the input flow rate qi and output h2. b) Generate the frequency response plots (magnitude and phase) for this TF using A1 = A2 = 0.001 m^2, R1=100, R2=200 sec/m^2 .

Ri Rz

95. Given an ideal digital BPF has impulse response h(n) sinc(n) sinc(n). What is its output signal when the input signal is the sequence cos(2n)

c) Construct the complete block diagram for 256K x 24 RAM by using a decoder and the RAM chip in Figure 6.1. Bina gambarajah blok lengkap bagi 256K x 24 RAM dengan menggunakan penyahkod dan cip RAM dalam Rajah 6.1 64K 8 RAM Input data DATA Output deta 16 Address ADRS Chip select CS ReadWrite RW Figure 6.1 Rajah 6.1 2010 c) Construct the complete

Q4. Write the causes of the national electricity blackout that occurred on March 31 of 2015 in Turkey. Give 3 suggestions to minimize the national electricity blackout again (Read Report on blackout in Turkey on 31 March 2015 Final Version 1.0, Project Group Turkey). OE Hou dnne tomneentum ffat ealar inunrter nounrannacito Write the tnmnoraturn

In the circuit below, the load is shown as component X1. Oh 24 V Determine the Thevenin equivalent voltage of the cireuit to the left of the load (7 points) Answer b. Determine the Thevenin equivalent resistance of the circuit to the left of the load (7 points) Answer (4 points)

3. Given the closed loop transfer function bellow find a. The range of K for stability b. The value of K for marginally stable system and the frequency of oscillation Hint Use the roots of auxiliary even polynomial to find system poles 5K(s 4) 7(s) 5s3 16 s (12 5 K)s 20 K

1. Determine the ztransform of each of the following signals using Ztransform and find its RoC. a. xnun 2un5 b. xn (un2 c. xn ( cos () un d. xn 2u1n e. xn unun10

Determine the weight of carbon tetrachloride that should be mixed with 20 lb lb of glycerin so that the combined mixture has a density of 2.85 slugft3 slugft3. Express your answer to three significant figures and include the appropriate units.

Question 3 For the following circuit, the switch was in the left position for long time before moving to the right position at t 0, find (a) is(t) for t20. (b) The energy stored in the capacitors after a long time has elapsed. t0 100 90 V 0.5 F 100 40 V 0.25 F

50 V 60 (t)6.04 cos( 2t 94) V 6 8 (t)4.91 cos( 2t 78) V 10 (t)1.90 cos( 2t39) V What is the value of the inductance L Answer L 1.3 H C HH R so v. V and v V 10 A V and v V Answer b 2.7 24 MI t sec V 39 (1)9.67 cos( 3t23) V (t)5.37 cos( 3t53) V 10 ZajbR 1jwC Let Za jb be the equivalent impedance of the parallel capacitor and resistor. Im(Z) What

calculate for V(t) ??

B. Obtain a complete expression for v(t) in the circuit of Figure 1, if V DC 6V, R 1kQ, C 10nF, and L 110mH.,The switch in the circuit of Figure 1 has been in position A for a long time. At t0, it is moved to position B. The resulting step response of the series RLC circuit is described by the secondorder differential equation (1). R L B A (T)

sh Current Analysis To determine Currents I1 and I2 for Figure 5.54 but use these component values: R = 5 ohm XL = +j15 oh

P5.54. Solve for the node voltage shown in Figure P5.54. j10 50 200 j15 10180

5. For the circuit shown, find IA, IB, Ic, ID, le, and the power for each of the sources. 2V 5.02 192 3.52 4A 352 www In 252 ww A , IB 492 www 292 ww I2 3V Ic 2A Fu 152 352 502 3 ID E

Homework Assignment 4 Input Circuits, Amplifiers, and Filters 1. Consider the Wheatstone bridge circuit shown below. Compute the output voltage from the bridge as well as the uncertainty of this measured value. Express the uncertainty as a percentage of the nominal value. 120011 100011 V 4 V 150011 130011

Standing wave can be represented as a product of two periodic functions (spatial and tem poral). Consider the following superpositions of waves VA(x, t) A sin(kz wt) 2A sin(kz wt) VB(r, t) A sin(kr wt) A cos(kr wt) vc(z,t) Asin(kr wt) Asin(kr 2wt) Does either of them (A, VB andor c) correspond to a standing wave Use trigonometric

Given x(t) 5u(t) 5u(t3) a) Plot x(t) Answer b) Find the Average Power in x(t) Answer PXovg

Ro Ce A CS Amplifier has CC1CsCc21F, RG10M2, Reig 100k, EmlmA V, RpRL40k2 a) Find the lower cutoff fiequency (f). (Use . as the decimal point. 3.14. Result in Hz.)

Examine the stability of the following characteristic polynomial 2 1 1 X 1 7 1 x0 u 3 4 5

Note Course Discretetime Signal Processing. Please help me to solve this problem stepbystep process. And thank you for your great time and support. 6. For a LTI causal system, the difference equation is given as yn xn 0.75yn1) 0.125yn2 Find H(2) Plot the zeroes and poles of H(z) and specify the ROC. Find yn for xn 8n. What kind of a system is

The three loads in the cireuit seen in Fig.1 are S, 6 j3 kVA, S2 7.5 Kw and 0.9 leading power factor, and S3 9 kVA and a unity power factor. a) Calculate the complex power associated with each voltage source, and b) Verify that the total real and reactive power delivered by the sources equals the total real and reactive power absorbed by the

4. Consider the circuit below. R1 R3 RL 15 V R6N (a) Determine the value of R, for maximum power transfer. (b) Determine the maximum power transferred to R, .

10.0v Solve for Ip, V1, Vz and V3 for this NMOS circuit. 1 ka For both transistors ka 0.10 mAV Vr 1.0 V W10um V3 LI1 jum 2.5V W220 um Ma Lz1 um 1kQ Gnd

Q1. Obtain the statespace representation for the following linear systems (z0.5) G(2) (z0.4)(z0.2)(z0.8) i) Please represent in controllable form ii) Please represent in observable form iii) Please represent in parallel form

9. A 4bit register is initially at 1011. The register is parallelloaded with 1010, and then rightshifted with Din 1. The final state of the 3D register is (a) 0011 (b) 0100 (c) 0101 (d) 1010 (e) 1101

Q3 for the circuit shown below use LoopMesh method (KVL) to find Vo. 3IK aK 3IK

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QUESTION 9 When comparing FM and PM which of the following is true O For the same modulation index and message frequency the bandwidth is the same for both PM and FM O For the same modulation index and message frequency the bandwidth is higher for PM than FM For the same modulation index and message frequency the bandwidth is lower for PM than FM

2. Consider the following sequence x(n) cos (2rn3)sin(2rn5). a. Is the sequence periodic If yes, what is the period If no, why not Note you need to show your work analytically but you can verify that your answer is correct by sketching the sequence using Matlab b. Find and sketch the complex exponential Fourier series coefficients (Magnitude and

Q2. The switch in the circuit shown has been closed for a long time. It is opened at t0. a) Find the voltage ) and the current ,() for all z (Assume that the circuit reaches steadystate long before it is opened) (40 pts) b) Find the total energy dissipated in the 1502 resistor for t 0. (20 pts) 150 a 2502 ) 0.1 in 2500 50 V

Suppose that two continuous time signal are given by x(t) and v(t) as x(t) u(t) 2u(t 1) u(t 2) v(t) u(t) u(t 1) Answer the following questions (a) Plot signals x(t) and v(t). (b) Find the convolution of y(t) x (Gt 3) v(t) (c) Plot for y(t).

13 R R2 V R1 78 ohms, R2 78 ohms, 13 2 amps, 3D 14 5 amps What is V

4 k(sz) For the system G(s) design a controller in the form of K(s) s(s4) (sp) Such that the closed loop step response has the following specifications (7. 4 sec 3 It T, sec 4 Where T, is the settling time and T, is the peak time. Hint Use the given requirements to find the place of desired poles

Problem 11.9s Determine v(t) for the circult of figure when v(t) 385cos30t V 150 F 28 2 0.1 H vi 30.3 H 0.2 H v(t) cos(30t (Express your answer as v(t) Vcos(at 0) where Vm0 and 180 0 180.) Click if you would like to Show Work for this question Open .Show Work

500n 125210 kV 17500 Given A 125 KV circuit has a load conaisting of 500 2 of resstance in series with 750 2 of inductive seactance. A capacitive seactance of 1750 2 is placed i parallel with the whole load Required What is the apparent power and power factor that must be provided by the source Soltion VA PF OLagping. OLeading or, OUnity Power

4. Find the equivalent inductance for each of the series and parallel combinations shown in figure below. 20 H TH SH 61H 2H 15 H 18 H 9 H (b) (a)

Problem 3. Determine the trigonometric Fourier series coefficients an and by, for signal x(t)sin(3t1) 2 cos(7rt2). Determine also the signals fundamental radian frequency wp. No integration is required to solve this problem.

) In the eireuit with ideal OPAmp, determine Vo, the outpat Voltage of OP Amp in phasor domain, format. rectangular 190 Volts Vo 190 Volh I 90

Subject Mathematics I Class First class Dr. Ali T. Shaheen PARTI Note Answer two questions only. All questions carry egual marks. Q.L.A) Consider the curve given by the equation ry 3xy 4 a) Find dydx using the implicit differentiation. b) Find an equation of the tangent line to the above curve at the point (1, 1). B) Derive the following

FZ104 ELECTRIC LABORATORY HOMEWORKV 13.06.2020 1) Figure I shows a solenoid which is connected to a Sid signal generator in an experimental setup. The current on Signel the solenoid is an AC current. A sense coil of N200 turns is placed at the center of the solenoid. The angle between the magnetic field produced by solenoid and the surface normal

K(s2) s253 2) Sketch the toot locus of closed loop system with openloop D(s)G(s) a. sketch real root locus b. find the asymptotes c. find the departure angles of complex poles d. sketch the root locus to the best of your ability e. Use matlab rlocus () to confirm your sketch (include a print out of your plot)

4. Implement each of the following functions using only twoinput gates. The multilevel circuit should have AND and OR gates alternating at adjacent levels. a) Z ABCDE b) X ABACD ABDAEF (last gate should be an AND gate) c) Part (b) with last gate as an OR gate

15 Vec R1 4.7k C1 71 R2 2.5k Vin W Q1 2210 Rs 50 Vs RE CE SINE() AC 0.02 2.2k 15 .model 2210 NPN (Bf100) Figure 1 A simple common emitter amplifier circuit. Note the ac source has a magnitude of 20 mV. NOTE Only the full schematics are requested below, not the ac small signal models. You may use the equations derived in lecture (or from the text)

1. Consider i,(t) 50u(t) find the V in T 2H 5 V(t) 5F 102 2. Find the V (t) 2H 52 V() 5F 102

dation (6. To calculate the voltage at bus 2, first calculate Q for bus 2. Q. (0) Im 1 (0) X, X. (0) Y2V k1 Im V (0) YV (0) V (0) YV2 (0) V (0)V (0) Imj2j6 j4 0

8. The methods used in this problem will be used later in the semester when calculating the power associated with periodic signals. The RMS value of a periodie function with period T, is defined as where the integration can be performed over any interval of length Ty. Explain what RMSS stands for by studying the formula. Hint each of the three

Problem 1 The closedloop transfer function of a certain linear system is KF(s) 1 KF(s) H(s) with 88 52 s( 6s 288 40) (s 4) 36 s(s 2)(s 2)2 16 F() Find the range (if any) of the forward gain K for which the closedloop system is stable. Problem 2 Sketch the locus of poles of the system of Problem 1, showing important parameters, including

Problem Set 8 Problem 3 Prevous Problem Protlem List Next Problem A causal discretetime LTI system is described by the block diagram below, where k is a real variable. Assume a 2, 3 6, and y 7. xn ym a) Find the transfer function, H(a) , of the system in terms of parameter k (please expres this as a rational polynomtal tunction in POSITIVE

1. Consider the signal set in Figure 1 for binary data transmission over a channel disturbed by AWGN. The noise is zeromean and has twosided PSD No2. As usual. s() is used for the transmission of bit 0 and s2(t) is for the transmission of bit 1. Furthermore, the two bits are equiprobable. 3 (1) A 5(1) 10 A 72 Figure 1 A binary signal set,

Q11. Please give the correct comparison between I, and I2, I3 and I4, Vz and V4, V4 and Vg 33 41 Ideal Ideal Ideal

Use the superposition Theorem to find the voltage Vab Voltage due to 2A source units Voltage due to 120V source units Vab units 2A 20 ww. ww 120 V 12 2 40

A charge of 10nC is placed at the center of a spherical conducting shell with an inner radius 5mm and outer radius 7mm what would be electric field intensity and potential at 3mm, 6mm and 9mm.

Problem Ten Design a common collector amplifier that has a low break frequency at 20HZ and a high break frequency at IMHZ. Use the following values for the amplifier. B 100 Ic 5mA C 2pF C 10PF C 10PF VBE 0.7V ro 0 R1 20KN 3D

Write an instruction sequence to swap the 16bit word stored at 10001001 with the 16bit word stored at 11001101. Write an instruction sequence to add the content of registrar B to the 16bit word stored at memory locations 10001001. Assume sum is still 16 bits.

OBTAIN THE THEV ENIN CIRLUITS And NORTON EQUIVALENT 4 B. WITH RESPECT To TERMENIA A Ivb Z202 202 IA 20Iv Find VT In A

P9.1 When F(z) z0.5 what ROC corresponds to causal f(n) P9.4 Find f(n) when F(z) (ROCfor anticausal f (n)). z2 2z 32 P9.6 Given F(z) What ROCs are possible 2z0.5 3z2

2. Using the RouthHurwitz criterion, find out how many closedloop poles of the system shown in the Figure lie in the left halfplane. in the right halfplane, and on the juaxis. R(s) C(s) 507 s 35 10s 30s 169

3. A perpendicularpolarized plane wave is incident at an angle 0, 20 from plastic (E 4, , H 4,) to a region of free space. a) Find the angle of transmission 0,. Find the value of the reflection coefficient r. Find the value of the transmission coefficient r. Find the critical angle, defined as the angle of incidence 0, at which the b) c) d)

A table of lasers and their wavelengths is supplied below. Which of them are absorbed by Silicon, Si, if its bandgap energy is 1.1 eV ErGlass .1540 nm InGaAs ..980 nm HeNe .633 nm (a) Only Er.Glass (b) None of them (c) HeNe and INGAAS O (d) Only HeNe O (e) All of them

Given the two logic functions haw doI hnow which logic gates te now y(a, b, c) b(a c) Use (i) Implement y(a, b, c) using the decoder of which the function table is given in Table 1, and any necessary basic logic gates.

The data below is for the reaction sequence ABCD Elementary step A,HkJ mol Ekl mol A B 22 33 B1C 11 22 21D 33 11 Hint Use the data to prepare a graph of the reaction profile and then answer the questions below. Your graph should be properly labelled and drawn to scale. Potential Energy Reaction progress (a) Which of the following steps has the

The initial reaction rate for the elementary reaction A2B 3C was measured as a function of temperature when the concentration of A was 2.5 M and the concentration of B was 1 M the measurements are summarized in the table below. From these data, a) What is the activation energy b) What is the frequency factor c) What is the rate constant as a