Power Systems Which of the following is/are the stator faults? failure of excitation over current All of these Inter phase faults failure of excitation over current All of these Inter phase faults ANSWER DOWNLOAD EXAMIANS APP
Power Systems In coal fired thermal power stations, what are the electrostatic precipitators used for? All of these To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard To keep the air heaters clean All of these To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard To keep the air heaters clean ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following method is used for changing power factor from leading to lagging shunt reactor series capacitor shunt capacitor any of the above shunt reactor series capacitor shunt capacitor any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems Specified quantities of load bus are P and δ Q and V P and Q V and δ P and δ Q and V P and Q V and δ ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 20 kV 83.76 kV 48.36 kV 52.84 kV 20 kV 83.76 kV 48.36 kV 52.84 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems a 50 Hz, 3-phase synchronous generator has inductance per phase of 15 mH. The capacitance of the generator and circuit breaker is 0.002 µF. What is its natural frequency? 290 kHz 29 kHz 29 MHz 2.9 kHz 290 kHz 29 kHz 29 MHz 2.9 kHz ANSWER DOWNLOAD EXAMIANS APP
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