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% 86%% 75% 90% 50% 86%% 75% 90% ANSWER DOWNLOAD EXAMIANS APP
Power Systems The time taken by the turbine to fall to 0 rpm speed from 3000 rpm is called stopping time. coasting time. damping time. settling time. stopping time. coasting time. damping time. settling time. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The steam power plant efficiency can be improved by burning large amount of coal. using large quantity of water. decreasing the load on the plant. using high temperature and high pressure steam. burning large amount of coal. using large quantity of water. decreasing the load on the plant. using high temperature and high pressure steam. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If skin depth is more, then skin effect is None of these more either 1 or 2 less None of these more either 1 or 2 less ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a power system with negligible resistance, the fault current at a point is 8.00 pu. The series reactance is to be included at the fault point to limit the short circuit. current to 5.00 pu is 0.075 pu. 0.200 pu. 3.000 pu. 0.125 pu. 0.075 pu. 0.200 pu. 3.000 pu. 0.125 pu. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 % 2.044 × 106 kWh. 4.06 × 106 kWh. 3 × 106 kWh. 5 × 106 kWh. 2.044 × 106 kWh. 4.06 × 106 kWh. 3 × 106 kWh. 5 × 106 kWh. ANSWER DOWNLOAD EXAMIANS APP
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