Power Systems A transmission line is operating under no load has ABCD parameters B = 100∠90° has a phase shift of 0.2 rad, how much shunt reactor is required for compensation of ferranti effect? 15.9 H 15.9 mH 2 mH 2 H 15.9 H 15.9 mH 2 mH 2 H ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the rated receiving end voltage is 33 kV, then what are the limits for safe operation of equipments? 33 to 50 kV 25 to 35 kV 31.35 to 34.65 kV any voltage above 33 kV 33 to 50 kV 25 to 35 kV 31.35 to 34.65 kV any voltage above 33 kV 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. 56 %. None of above 28 %. 14 %. 56 %. None of above 28 %. 14 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the load is short circuited, then reflection coefficient of voltage is 0 -2 -1 1 0 -2 -1 1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The draft tube is provided to raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. increase the acting head on the water wheel. None of these raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. increase the acting head on the water wheel. None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of high energy loss from turbine exhaust to condenser. high energy loss in boiler. low alternative efficiency. low steam turbine mechanical efficiency. high energy loss from turbine exhaust to condenser. high energy loss in boiler. low alternative efficiency. low steam turbine mechanical efficiency. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS