Power Systems Which cooling is preferred for large turbine generator Nitrogen cooling. Oxygen cooling. None of these. Hydrogen cooling. Nitrogen cooling. Oxygen cooling. None of these. Hydrogen cooling. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following methods is/are used for reactive or voltage compensation generation excitation control shunt capacitor All of these series capacitor generation excitation control shunt capacitor All of these series capacitor 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%% 75% 50% 90% 86%% 75% 50% 90% ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 50 Hz, 17.32 kV generator is connected to a power system. The system reactance and capacitance per phase are 10 mH and 0.2 mF respectively. What is the maximum voltage across the contacts of the circuit breaker at an instant when it passes through zero? 31.28 kV 29.28 kV 30.28 kV 28.28 kV 31.28 kV 29.28 kV 30.28 kV 28.28 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems Rankine cycle efficiency of a steam power plant is of 20 - 30 %. 45 - 80 %. 30 - 45 %. 60 - 80 %. 20 - 30 %. 45 - 80 %. 30 - 45 %. 60 - 80 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of draft tube is reaction turbine is to convert kinetic energy of water. reduce water hammer. increase flow rate of water. all of above. convert kinetic energy of water. reduce water hammer. increase flow rate of water. all of above. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS