Power Systems Which of the following represents the transmission line positive sequence reactance Xs - Xm Xm - Xs Xs +2 Xm 2Xs + Xm Xs - Xm Xm - Xs Xs +2 Xm 2Xs + Xm ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)? 3 × 106 kV / sec. 3.5 × 106 kV / sec. 2 × 106 kV / sec. 1 × 106 kV / sec. 3 × 106 kV / sec. 3.5 × 106 kV / sec. 2 × 106 kV / sec. 1 × 106 kV / sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Offset mho relay is used for the protection of equipment when failure of prime mover of the generator None of these either 1 or 2 loss of excitation of the generator failure of prime mover of the generator None of these either 1 or 2 loss of excitation of the generator ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which cooling is preferred for large turbine generator Nitrogen cooling. Oxygen cooling. Hydrogen cooling. None of these. Nitrogen cooling. Oxygen cooling. Hydrogen cooling. None of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The VSWR of transmission line is Proportional to load and characteristic impedance. Directly proportional to characteristic impedance and inversely to load impedance. Directly proportional to load impedance and inversely to characteristic impedance. Directly proportional to voltage minimum and inversely proportional to voltage maximum. Proportional to load and characteristic impedance. Directly proportional to characteristic impedance and inversely to load impedance. Directly proportional to load impedance and inversely to characteristic impedance. Directly proportional to voltage minimum and inversely proportional to voltage maximum. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 50 Hz is 1 kW/km per phase. What is the corona loss at 60 Hz in kW/km per phase? 1 1.13 1.25 0.89 1 1.13 1.25 0.89 ANSWER DOWNLOAD EXAMIANS APP
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