Power Systems For distortion less line which of following relation are true R/L = G/C. R/L = C/G. None of above. R = O, G = O. R/L = G/C. R/L = C/G. None of above. R = O, G = O. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 2nd harmonic current. 5th harmonic current. 3rd harmonic current. 7th harmonic current. 2nd harmonic current. 5th harmonic current. 3rd harmonic current. 7th harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system? 14.7 mA. 1.476 A. 14.76 A. 1 A. 14.7 mA. 1.476 A. 14.76 A. 1 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Non-commercial sources of energy are wood, animal wastes and agricultural wastes. fossil fuel, hydro power and nuclear power. None of these solar, wind and biomass. wood, animal wastes and agricultural wastes. fossil fuel, hydro power and nuclear power. None of these solar, wind and biomass. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging. 28 %. 56 %. None of above 14 %. 28 %. 56 %. None of above 14 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Oxide film arrestor has which of the following properties? Does not require daily charging. Installed at points of transmission line where daily visit is difficult. Both A and B. It is expensive. Does not require daily charging. Installed at points of transmission line where daily visit is difficult. Both A and B. It is expensive. ANSWER DOWNLOAD EXAMIANS APP
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