Power Systems Main bus bar protection scheme is /are differential protection. fault bus protection. both fault bus and differential protection. none of these. differential protection. fault bus protection. both fault bus and differential protection. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a biased differential relay the bias is defined as the ratio of fault current and operating coil current. fault current and restraining coil current. operating coil current and restraining coil current. number of turns of restraining and operating coil. fault current and operating coil current. fault current and restraining coil current. operating coil current and restraining coil current. number of turns of restraining and operating coil. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Efficiency of thermal power plant can be taken as turbine efficiency. product of efficiencies of all stages. efficiency of thermal cycle. generator efficiency. turbine efficiency. product of efficiencies of all stages. efficiency of thermal cycle. generator efficiency. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Air blast CB. Vacuum CB. Any of these. Oil CB. Air blast CB. Vacuum CB. Any of these. Oil CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠90° Ω, C = 0.5*10-6∠90° ℧. Find the no load receiving end voltage? 320 kv 400 kV 600 kV 500 kV 320 kv 400 kV 600 kV 500 kV 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? 15.9 H 2 H 2 mH 15.9 mH 15.9 H 2 H 2 mH 15.9 mH ANSWER DOWNLOAD EXAMIANS APP
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