Power Systems Most commonly used material for insulator is porcelain glass mica All of these porcelain glass mica All of these 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? 0.92 0.56 -0.56 -0.92 0.92 0.56 -0.56 -0.92 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The voltage regulation of a line at full load 0.8 power factor is 11. A long transmission line under no load conditions, for a good voltage profile needs shunt resistance at receiving end All of these shunt capacitor at receiving end shunt reactor at receiving end shunt resistance at receiving end All of these shunt capacitor at receiving end shunt reactor at receiving end ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 5 sec. 20 sec. 10 sec. none of these. 5 sec. 20 sec. 10 sec. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems To improve the efficiency of thermal power plant ________________ is placed between boiler and turbine. air preheater. economizer. superheater. ash handling point. air preheater. economizer. superheater. ash handling point. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV? 4 MJ/MVA 2 MJ/MVA 8 MJ/MVA 6 MJ/MVA 4 MJ/MVA 2 MJ/MVA 8 MJ/MVA 6 MJ/MVA ANSWER DOWNLOAD EXAMIANS APP
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