Power Systems A 20 MVA generator has inertia constant of 0.5 pu. Find new value for 50 MVA base? 0.5 pu 0.2 pu 0.1 pu 0.4 pu 0.5 pu 0.2 pu 0.1 pu 0.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A coal fired steam power station working at a plant factor of 80% has one 500 MW generating unit. If the heat content of coal is 2 kWh/kg, the overall plant efficiency is 40% and a train load of coal is 2000 metric tons, then the number of trains required daily for the plant is 2 6 16 10 2 6 16 10 ANSWER DOWNLOAD EXAMIANS APP
Power Systems To improve the efficiency of thermal power plant ________________ is placed between boiler and turbine. economizer. superheater. air preheater. ash handling point. economizer. superheater. air preheater. ash handling point. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Earth fault relay uses the which of the following sequence currents? zero sequence positive sequence any of the above negative sequence zero sequence positive sequence any of the above negative sequence ANSWER DOWNLOAD EXAMIANS APP
Power Systems Capacitance voltage transformer ( CVT ) is used to improve the power factor of the transmission. connect instruments on the LT side. reduce losses in a transmission line. none of these. improve the power factor of the transmission. connect instruments on the LT side. reduce losses in a transmission line. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true regarding HVDC? HVDC can utilize earth for its return path All of these Corona loss is very much reduced in the dc line There is no skin effect in dc line HVDC can utilize earth for its return path All of these Corona loss is very much reduced in the dc line There is no skin effect in dc line ANSWER DOWNLOAD EXAMIANS APP
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