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 %. 28 %. 14 %. None of above 56 %. 28 %. 14 %. None of above ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? Low ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity High ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Ships are usually supplied power by Hydraulic turbine. Diesel engine. None of above. Steam accumulator. Hydraulic turbine. Diesel engine. None of above. Steam accumulator. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has an impedance of (2+j6) Ω has voltage regulation of 10% at a load power factor of 0.8 lag. Find the voltage regulation for a load of 0.6 lead 10% -10% -6.92% 6.92% 10% -10% -6.92% 6.92% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following will take least time in starting from cold condition to full load operation Thermal power plant. Nuclear power plant. Hydro electric power plant. Gas turbine plant. Thermal power plant. Nuclear power plant. Hydro electric power plant. Gas turbine plant. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The power output of a nuclear power station is proportional to square of the rate at which fission reaction occurs. the rate at which fission reaction occurs. square root of the rate at which fission reaction occurs. none of above. square of the rate at which fission reaction occurs. the rate at which fission reaction occurs. square root of the rate at which fission reaction occurs. none of above. ANSWER DOWNLOAD EXAMIANS APP
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