Power Systems Which of the following faults is/are treated as external faults? Over voltage Failure of prime mover of the generator Failure of excitation All of these Over voltage Failure of prime mover of the generator Failure of excitation All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Making and breaking currents of 3 phase AC circuit breakers in power system are respectively in what form? any of the above RMS and Instantaneous value Instantaneous and RMS value RMS and RMS value any of the above RMS and Instantaneous value Instantaneous and RMS value RMS and RMS value ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? any of the above Over load Short circuit Temperature any of the above Over load Short circuit Temperature ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit impedance Z(pu) is given by ZΩ* (MVA)b/(KV)²b ZΩ* (MVA)b*100/(KV)²b ZΩ* (kVA)b/(KV)²b ZΩ* (MVA)b/((KV)²b *100) ZΩ* (MVA)b/(KV)²b ZΩ* (MVA)b*100/(KV)²b ZΩ* (kVA)b/(KV)²b ZΩ* (MVA)b/((KV)²b *100) ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following insulator is practically used for railway crossings? pin insulator All of these strain insulator string insulator pin insulator All of these strain insulator string insulator ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earthing switch is used for All of these protection of equipment from ground faults discharging residual energies measuring of safety voltage All of these protection of equipment from ground faults discharging residual energies measuring of safety voltage ANSWER DOWNLOAD EXAMIANS APP
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