A) Consider Figure 3a. The motor is represented by the simple series RL circuit. Determine and obtain a plot of the motor voltage for all time. [6] 100 V 202 I. 1=0 20 3 H 0,8 + vm (1) Figure 3a B) A symmetrical 3-phase, 3-wire supply with a line voltage of 400 V supplies two balanced 3-phase loads; one Y-connected with each branch impedance equal to (5+j9) ohm and the other D-connected with each branch impedance equal to (15+j27) ohm. The target is to correct the power factor to unity using three capacitors, each of the same capacitance, are connected in delta to the same supply so as to form parallel circuit with the above loads. Assume a positive sequence system. Calculate the supply and load currents as well as the power factor of the entire [4] load circuit before power factor correction. II. Obtain the capacitance of each capacitor, the capacitor currents and the new factor. supply current at the new power [3] III. Draw a combined phasor diagram showing currents in parts A) and B). Include the voltages. Hint - draw for phase a [2]