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? 50% 75% 86%% 90% 50% 75% 86%% 90% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of short transmission line is up to any of the above 150 km 80 km 40 km any of the above 150 km 80 km 40 km ANSWER DOWNLOAD EXAMIANS APP
Power Systems The method of neutral grounding affects the positive sequence network All of these negative sequence network zero sequence network positive sequence network All of these negative sequence network zero sequence network ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is 45.0 MVAr. 55.56 MVAr. 40.5 MVAr. 61.73 MVAr. 45.0 MVAr. 55.56 MVAr. 40.5 MVAr. 61.73 MVAr. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speeds of Kaplan, Francis and Pelton turbines are in neither increasing nor decreasing order. None of these the decreasing order. the increasing order. neither increasing nor decreasing order. None of these the decreasing order. the increasing order. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The draft tube is provided to None of these reduce the effect of water hammer. increase the acting head on the water wheel. raise the water surface of the stream to create an artificial head. None of these reduce the effect of water hammer. increase the acting head on the water wheel. raise the water surface of the stream to create an artificial head. ANSWER DOWNLOAD EXAMIANS APP
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