Power Systems Installation of capacitors at suitable locations and of optimum size in a distribution system results in reduction of KVA rating of distribution transformers All of these reduction in distribution power loss improved voltage regulation reduction of KVA rating of distribution transformers All of these reduction in distribution power loss improved voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 0.1 0.001 10 1000 0.1 0.001 10 1000 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ratio of reset to pick up current for an induction cup relay is approximately 1.0. 0.75. 1.35. 0.99. 1.0. 0.75. 1.35. 0.99. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is operating under no load has ABCD parameters B = 100∠90° has a phase shift of 0.2 rad, how much shunt reactor is required for compensation of ferranti effect? 2 mH 2 H 15.9 mH 15.9 H 2 mH 2 H 15.9 mH 15.9 H ANSWER DOWNLOAD EXAMIANS APP
Power Systems The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by PG1 = 109.75 MW and PG2 = 140.25 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 142.5 MW and PG2 = 107.5 MW PG1 = 109.75 MW and PG2 = 140.25 MW PG1 = 100 MW and PG2 = 150 MW PG1 = 125 MW and PG2 = 125 MW PG1 = 142.5 MW and PG2 = 107.5 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 5th harmonic current. 7th harmonic current. 3rd harmonic current. 2nd harmonic current. 5th harmonic current. 7th harmonic current. 3rd harmonic current. 2nd harmonic current. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS