Power Systems Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer? delta-star delta-delta star-star star-delta delta-star delta-delta star-star star-delta ANSWER DOWNLOAD EXAMIANS APP
Power Systems Gross head of an hydroelectric power station is all of above. the height of water level in the river where the tail race is provided. the difference of water level between the level in storage and tail race. the height of water level in the river where the storage is provided. all of above. the height of water level in the river where the tail race is provided. the difference of water level between the level in storage and tail race. the height of water level in the river where the storage is provided. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of the cable is doubled, its capacitance C will be unchanged. one-fourth. one-half. doubled. unchanged. one-fourth. one-half. doubled. 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 cosωt? 1.47 msec 9.68 4.68 msec 2.63 msec 1.47 msec 9.68 4.68 msec 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a three-phase system, when the loads are perfectly balanced, the neutral current is zero. one - third of minimum. one - third of maximum. two - thirds of maximum. zero. one - third of minimum. one - third of maximum. two - thirds of maximum. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV? 21 20 13 10 21 20 13 10 ANSWER DOWNLOAD EXAMIANS APP
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