Power Systems A hydraulic turbine having rated speed of 250 rpm is connected to a synchronous generator. In order to produce power at 50 Hz, the numbers of pole are required in the generator 24. 16. 12. 6. 24. 16. 12. 6. ANSWER DOWNLOAD EXAMIANS APP
Power Systems On what factor does the performance of a circuit breaker depend? Both A and C. Breaking speed. None of these. Critical length of breaking. Both A and C. Breaking speed. None of these. Critical length of breaking. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The receiving end voltage for a long line under no load condition is any of the above more than the sending end voltage equal to the sending end voltage less than the sending end voltage any of the above more than the sending end voltage equal to the sending end voltage less than the sending end voltage ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the inertia constant H = 8 MJ/MVA for a 50 MVA generator, the stored energy is 8 MJ 200 MJ 400 MJ 50 MJ 8 MJ 200 MJ 400 MJ 50 MJ ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ABCD constants of a 3-phase transmission line are A = D = 0.8∠1°, B = 170∠85° Ω , C = 0.002∠90.4° ℧. The sending end voltage is 400 kV. The receiving end voltage under no load condition is 350 kV 500 kV 400 kV 600 kV 350 kV 500 kV 400 kV 600 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the time of operation of a relay for unity TMS is 10 sec. the time of operation of 0.5 TMS will be _______________ secs. 20. 3. 5. 7. 20. 3. 5. 7. ANSWER DOWNLOAD EXAMIANS APP
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