Power Systems A 1-phase transmission line has an impedance (4 + 3j ) Ω. Find the power factor of the load for zero voltage regulation? 0.8 lag 0.6 lag 0.8 lead 0.6 lead 0.8 lag 0.6 lag 0.8 lead 0.6 lead ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be 4 MΩ 8 MΩ 16 MΩ 32 MΩ 4 MΩ 8 MΩ 16 MΩ 32 MΩ ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following grounding is not practically preferred for protection of equipments? reactance grounding All of these resistance grounding isolated grounding reactance grounding All of these resistance grounding isolated grounding ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is used in thermal plants Rankine cycle Otto cycle Joule cycle All of these Rankine cycle Otto cycle Joule cycle All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? -0.52 Hz 50 Hz 0.48 Hz 0.52 Hz -0.52 Hz 50 Hz 0.48 Hz 0.52 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a thermal power plant, which of its following components needs maximum maintenance attention Boiler. Condenser. Super heater. Steam turbine. Boiler. Condenser. Super heater. Steam turbine. ANSWER DOWNLOAD EXAMIANS APP
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