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? -0.92 -0.56 0.92 0.56 -0.92 -0.56 0.92 0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the percentage reactance of an element is 20 % and the full load current is 50 Amp, the short circuit current will be 250 Amp. 300 Amp. 200 Amp. 350 Amp. 250 Amp. 300 Amp. 200 Amp. 350 Amp. ANSWER DOWNLOAD EXAMIANS APP
Power Systems An isolated synchronous generator with transient reactance equal to 0.1 pu on a 100 MVA base is connected to the high voltage bus through a step up transformer of reactance 0.1 pu on a 100 MVA base. The fault level at the bus is 500 MVA 200 MVA 400 MVA 100 MVA 500 MVA 200 MVA 400 MVA 100 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage? -81.82 kV 81.82 kV -18.18 kV 18.18 kV -81.82 kV 81.82 kV -18.18 kV 18.18 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reflector nuclear reactor are made of beryllium. steel. cast iron. boron. beryllium. steel. cast iron. boron. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Isolator in sub station is open under ------------- condition? any of the above full load short circuit no load any of the above full load short circuit no load ANSWER DOWNLOAD EXAMIANS APP
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