Power Systems The most commonly used material for insulators of overhead lines is mica PVC glass porcelain mica PVC glass porcelain ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used in case hill areas to over come the which problem? increase string efficiency All of these increase power factor unequal ice loading increase string efficiency All of these increase power factor unequal ice loading ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earth fault relay uses the which of the following sequence currents? zero sequence positive sequence any of the above negative sequence zero sequence positive sequence any of the above negative sequence ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has 50 km operating at frequency of 500 Hz. Find the type of the line? any of the above short transmission line medium transmission line long transmission line any of the above short transmission line medium transmission line long transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LL LLL LLG LG LL LLL LLG LG ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line is operating under no load has ABCD parameters B = 100∠90° has a phase shift of 0.2 rad, how much shunt reactor is required for compensation of ferranti effect? 2 mH 2 H 15.9 H 15.9 mH 2 mH 2 H 15.9 H 15.9 mH ANSWER DOWNLOAD EXAMIANS APP
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