Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 22.5 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive sequence reactance will be equal to negative sequence if the equipment is generator. transformer and transmission lines. motor. none of these. generator. transformer and transmission lines. motor. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The thermal efficiency of BWR is None of these less than that of PWR. equal to that of PWR. greater than that of PWR. None of these less than that of PWR. equal to that of PWR. greater than that of PWR. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a 500 Hz frequency excitation, a 100 km long power line will be modelled as long transmission line any of the above shunt capacitor medium transmission line long transmission line any of the above shunt capacitor medium transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems The most commonly used material for insulators of overhead lines is PVC porcelain glass mica PVC porcelain glass mica ANSWER DOWNLOAD EXAMIANS APP
Power Systems Where the voltage is high and current to be interrupted is low, Which of following the breaker is preferable? Air blast CB. Vacuum CB. Any of these. Oil CB. Air blast CB. Vacuum CB. Any of these. Oil CB. ANSWER DOWNLOAD EXAMIANS APP
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