Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 4.68 msec 1.47 msec 9.68 2.63 msec 4.68 msec 1.47 msec 9.68 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems Keeping in view the cost and overall effectiveness, the following circuit breaker is best suited for capacitor bank switching? SF6 CB. Oil CB. Air blast CB. Vacuum CB. SF6 CB. Oil CB. Air blast CB. Vacuum CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a transformer is loaded, the secondary terminal voltage gains. That means power factor is unity. leading. zero. lagging. unity. leading. zero. lagging. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is 8.06 Ω / phase. 2.26 Ω / phase. 6.06 Ω / phase. 4.65 Ω / phase. 8.06 Ω / phase. 2.26 Ω / phase. 6.06 Ω / phase. 4.65 Ω / phase. ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 60-70% 45-55% 20-25% 30-40% 60-70% 45-55% 20-25% 30-40% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Breaking current is a ------------------ value? any of the above average maximum RMS any of the above average maximum RMS ANSWER DOWNLOAD EXAMIANS APP
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