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 6. 12. 24. 16. 6. 12. 24. 16. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 4, 10 100, 0.4 4, 0.4 100, 10 4, 10 100, 0.4 4, 0.4 100, 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which cooling is preferred for large turbine generator None of these. Oxygen cooling. Hydrogen cooling. Nitrogen cooling. None of these. Oxygen cooling. Hydrogen cooling. Nitrogen cooling. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Air blast CB. Oil CB. Any of these. Vacuum CB. Air blast CB. Oil CB. Any of these. Vacuum CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? None of these Power line Both power and telecommunication lines either 1 or 2 None of these Power line Both power and telecommunication lines either 1 or 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems If sparsity of a 5 bus transmission line is 0.4. Find the number of transmission lines? 4 5 6 3 4 5 6 3 ANSWER DOWNLOAD EXAMIANS APP
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