Power Systems A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation? 400 MW 386 MW 478 MW 456 MW 400 MW 386 MW 478 MW 456 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems Condition for zero voltage regulation is tanφ = X/R cosφ = R/X cosφ = X/R tanφ = R/X tanφ = X/R cosφ = R/X cosφ = X/R tanφ = R/X ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Air blast CB. Minimum oil CB. Plain oil CB. Air break CB. Air blast CB. Minimum oil CB. Plain oil CB. Air break CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is 8 20 4 10 8 20 4 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will reduce the thermal efficiency both 2 and 3 reduce the heat increase the thermal efficiency reduce the thermal efficiency both 2 and 3 reduce the heat increase the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems The rating of CB is in terms of voltage. VAR. volt - ampere. current. voltage. VAR. volt - ampere. current. ANSWER DOWNLOAD EXAMIANS APP
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