Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 15. 25. 50. 10. 15. 25. 50. 10. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum power transfer capability of transmission line can be increased by All of these Using series capacitance Using bundled conductors Parallel transmission lines All of these Using series capacitance Using bundled conductors Parallel transmission lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems String efficiency depends upon voltage rating of whole string. voltage rating of one SCR. no. of SCR in the string. all of these. voltage rating of whole string. voltage rating of one SCR. no. of SCR in the string. all of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base? 0.2 pu 0.25 pu 5 pu 1 pu 0.2 pu 0.25 pu 5 pu 1 pu 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 125 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 12.5 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? 28.28 kV 31.28 kV 30.28 kV 29.28 kV 28.28 kV 31.28 kV 30.28 kV 29.28 kV ANSWER DOWNLOAD EXAMIANS APP
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