Power Systems Mho relay is usually employed for protection of any line short transmission lines only long transmission lines only medium transmission lines only any line short transmission lines only long transmission lines only medium transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 29.28 kV 28.28 kV 31.28 kV 30.28 kV 29.28 kV 28.28 kV 31.28 kV 30.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems In which of the following configuration power transferability is higher? None of these triangular configuration horizontal configuration same in both configuration None of these triangular configuration horizontal configuration same in both configuration ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation? 478 MW 386 MW 456 MW 400 MW 478 MW 386 MW 456 MW 400 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following method is used for changing power factor from leading to lagging shunt reactor shunt capacitor any of the above series capacitor shunt reactor shunt capacitor any of the above series capacitor ANSWER DOWNLOAD EXAMIANS APP
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