Power Systems Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation? initial cost is low single unit can be used as both capacitance and inductor by adjusting the excitation smooth voltage regulation is possible by controlling excitation both 1 and 2 initial cost is low single unit can be used as both capacitance and inductor by adjusting the excitation smooth voltage regulation is possible by controlling excitation both 1 and 2 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 remove dust particles setting on the bus bar conductors in the station switch yard To collect the dust particles from the flue gases All of these To keep the air heaters clean To remove dust particles setting on the bus bar conductors in the station switch yard To collect the dust particles from the flue gases ANSWER DOWNLOAD EXAMIANS APP
Power Systems MCB stands for molded circuit breaker. miniature circuit breaker. maximum capacity breaker. minimum capacity breaker. molded circuit breaker. miniature circuit breaker. maximum capacity breaker. minimum capacity breaker. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? 0.56 -0.56 0.92 -0.92 0.56 -0.56 0.92 -0.92 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Per unit of any quantity is defined as actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in different units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in different units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units ANSWER DOWNLOAD EXAMIANS APP
Power Systems What is the approximate efficiency of a normal thermal power station? 60-70% 20-25% 30-40% 45-55% 60-70% 20-25% 30-40% 45-55% ANSWER DOWNLOAD EXAMIANS APP
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