Power Systems Which of the following is/are the desirable properties of a insulator material? Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For a 500 Hz frequency excitation, a 100 km long power line will be modelled as any of the above shunt capacitor long transmission line medium transmission line any of the above shunt capacitor long transmission line medium transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 1.47 msec 9.68 4.68 msec 2.63 msec 1.47 msec 9.68 4.68 msec 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following power plants will take long period in erection and installation Thermal. Nuclear. Hydro Power Plant Gas turbine. Thermal. Nuclear. Hydro Power Plant Gas turbine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of pumped storage plants is/are All of these operating time is minimum most economical as a peak load supply plant used as load frequency control All of these operating time is minimum most economical as a peak load supply plant used as load frequency control ANSWER DOWNLOAD EXAMIANS APP
Power Systems The main objectives of power system is/are Cost of electrical energy per KWh is to be minimum All of these Reliable power has to be available Flexible power has to be available. Cost of electrical energy per KWh is to be minimum All of these Reliable power has to be available Flexible power has to be available. ANSWER DOWNLOAD EXAMIANS APP
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