Power Systems Peterson coil is used in case of transmission line for increase the voltage level compensation of arcing grounds reduce ferranti effect improve power factor increase the voltage level compensation of arcing grounds reduce ferranti effect improve power factor ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, 2000 MVA, 3 secs. The symmetrical breaking current is 50 kA. 55 kA. 45 kA. 35 kA. 50 kA. 55 kA. 45 kA. 35 kA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used for protection of equipment from short circuits protection of equipment from open circuits All of these protection of equipment from external lightning protection of equipment from short circuits protection of equipment from open circuits All of these protection of equipment from external lightning ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of pumped storage plants is/are used as load frequency control most economical as a peak load supply plant All of these operating time is minimum used as load frequency control most economical as a peak load supply plant All of these operating time is minimum ANSWER DOWNLOAD EXAMIANS APP
Power Systems Capacitance voltage transformer ( CVT ) is used to improve the power factor of the transmission. none of these. connect instruments on the LT side. reduce losses in a transmission line. improve the power factor of the transmission. none of these. connect instruments on the LT side. reduce losses in a transmission line. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 36 kV 32 kV 45 kV 40 kV 36 kV 32 kV 45 kV 40 kV ANSWER DOWNLOAD EXAMIANS APP
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