Power Systems For large plants of capacity for more than 15 MW, what type of cooling is used Liquid. Air. Water. Hydrogen. Liquid. Air. Water. Hydrogen. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two insulator discs of identical capacitance value C make up a string for a 22 kV, 50 Hz, single phase overhead line insulation system. If pin to earth capacitance is also C, then find the string efficiency? 86%% 90% 75% 50% 86%% 90% 75% 50% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A thermal protection relay provides protection against what? Temperature Short circuit Over load any of the above Temperature Short circuit Over load any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase transmission line, each phase is supported by 3 insulated discs, maximum voltage of each disc is 20 kV. Find the operating voltage of the transmission line per phase if efficiency of string is 80.6%. 48.36 kV 83.76 kV 52.84 kV 20 kV 48.36 kV 83.76 kV 52.84 kV 20 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Stock bridge dampers are used to All of these reduce the vibrations at the point of support increase the sag reduce the tension All of these reduce the vibrations at the point of support increase the sag reduce the tension ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is a reaction turbines Francis turbine and Kaplan turbine. None of these. Kaplan and Pelton turbine. Pelton turbine and Francis turbine. Francis turbine and Kaplan turbine. None of these. Kaplan and Pelton turbine. Pelton turbine and Francis turbine. ANSWER DOWNLOAD EXAMIANS APP
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