Power Systems A power station has a maximum demand of 15 MW. The plant capacity is 20 MW. Find the reserve capacity of the plant? 20 MW 5 MW 10 MW 15 MW 20 MW 5 MW 10 MW 15 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging. 28 %. None of above 14 %. 56 %. 28 %. None of above 14 %. 56 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following power planets is the least reliable Geothermal. Tidal. Solar. Wind. Geothermal. Tidal. Solar. Wind. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The draft tube is provided to increase the acting head on the water wheel. raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. None of these increase the acting head on the water wheel. raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 90% 86%% 50% 75% 90% 86%% 50% 75% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be 8.936 pu 10.936 pu 7.936 pu 9.936 pu 8.936 pu 10.936 pu 7.936 pu 9.936 pu ANSWER DOWNLOAD EXAMIANS APP
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