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 MHz 29 kHz 2.9 kHz 290 kHz 29 MHz 29 kHz 2.9 kHz ANSWER DOWNLOAD EXAMIANS APP
Power Systems Transmission lines are transposed to reduce proximity effect ferranti effect interference with neighbouring communication lines skin effect proximity effect ferranti effect interference with neighbouring communication lines skin effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems A three phase, 33 kV oil circuit breaker is rated 1200 A, the symmetrical breaking capacity is 2000 MVA, 3 secs. Then the making capacity is 5200 MVA. 5100 MVA. 5500 MVA. 5000 MVA. 5200 MVA. 5100 MVA. 5500 MVA. 5000 MVA. ANSWER DOWNLOAD EXAMIANS APP
Power Systems MCB stands for miniature circuit breaker. minimum capacity breaker. maximum capacity breaker. molded circuit breaker. miniature circuit breaker. minimum capacity breaker. maximum capacity breaker. molded circuit breaker. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In coal fired thermal power stations, what are the electrostatic precipitators used for? All of these To keep the air heaters clean To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard All of these To keep the air heaters clean To collect the dust particles from the flue gases To remove dust particles setting on the bus bar conductors in the station switch yard ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following matrix is used for load flow studies? Z bus matrix Y bus matrix null matrix Unit matrix Z bus matrix Y bus matrix null matrix Unit matrix ANSWER DOWNLOAD EXAMIANS APP
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