Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 225 electrical degrees/s² 22.5 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 125 electrical degrees/s² 12.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the number of insulator discs required in string insulator, if operating voltage is 220 kV and maximum voltage of each disc is 11 kV? 20 10 13 21 20 10 13 21 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Electrostatic precipitators in thermal power plants are used for All of these control flow rate remove moisture from the cole removal of ash from flue gas All of these control flow rate remove moisture from the cole removal of ash from flue gas ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following insulator is practically used for railway crossings? strain insulator string insulator pin insulator All of these strain insulator string insulator pin insulator All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A synchronous generator is of 100 MVA have inertia constant of 20 MJ/MVA. Find the angular momentum in MJsec/electrical degrees 0.4 0.22 5 2000 0.4 0.22 5 2000 ANSWER DOWNLOAD EXAMIANS APP
Power Systems What should be the minimum depth (in metre)of cable trench to dug for laying of 1.1 kV? 1.05. 1.20. 0.90. 0.75. 1.05. 1.20. 0.90. 0.75. ANSWER DOWNLOAD EXAMIANS APP
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