Power Systems A 3 core cable gives on test a capacitance of 3.7 µF between two cores. Find the line charging current of the cable when it is connected to 11 kV, 50 Hz system? 14.76 A. 14.7 mA. 1.476 A. 1 A. 14.76 A. 14.7 mA. 1.476 A. 1 A. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used to protect electrical equipment against direct strokes of lightning. over currents due to lightning stroke. power frequency of over voltages. over voltages due to indirect lightning stroke. direct strokes of lightning. over currents due to lightning stroke. power frequency of over voltages. over voltages due to indirect lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A loss less transmission line having surge impedance loading (SIL) of 2280 MW is provided with a uniformly distributed series capacitive compensation of 30 %. Then SIL of compensated transmission line will be 1835 MW. 2725 MW. 2280 MW. 3257 MW. 1835 MW. 2725 MW. 2280 MW. 3257 MW. ANSWER DOWNLOAD EXAMIANS APP
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 sinωt? 4.68 msec 1.47 msec 2.63 msec 9.68 msec 4.68 msec 1.47 msec 2.63 msec 9.68 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems On what factor does the performance of a circuit breaker depend? Critical length of breaking. Breaking speed. Both A and C. None of these. Critical length of breaking. Breaking speed. Both A and C. None of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Normally Z bus matrix is a unit matrix null matrix full matrix sparse matrix unit matrix null matrix full matrix sparse matrix ANSWER DOWNLOAD EXAMIANS APP
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