Power Systems To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with 3rd harmonic current. 2nd harmonic current. 5th harmonic current. 7th harmonic current. 3rd harmonic current. 2nd harmonic current. 5th harmonic current. 7th harmonic current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For 132 kV system, the reactance and capacitance up to the location of the CB is 3 Ω and 0.015 μF respectively. The maximum value of RRRV is 12.2 kV / μs. 10.01 kV / μs. 2.0 kV / μs. 9.01 kV / μs. 12.2 kV / μs. 10.01 kV / μs. 2.0 kV / μs. 9.01 kV / μs. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A cable has inductance of 0.22 mH per km and capacitance of 0.202 µF per km. The surge impedance of the cable is 52 Ω 33 Ω 28 Ω 40 Ω 52 Ω 33 Ω 28 Ω 40 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is 10 20 8 4 10 20 8 4 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In which power plant, the thermal efficiency is quite low Nuclear power plant. Hydro power plant. Diesel power plant. Steam power plant. Nuclear power plant. Hydro power plant. Diesel power plant. Steam power plant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If sag in an overhead line increase, tension in the line None of these remains same decrease increase None of these remains same decrease increase ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS