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 125 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 225 electrical degrees/s² 22.5 electrical degrees/s² 12.5 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems The essential requirement(s) for power plants to be operated as peak load plants are All of these Quick response to load variation. Capability of quick starts. Low capital cost. All of these Quick response to load variation. Capability of quick starts. Low capital cost. ANSWER DOWNLOAD EXAMIANS APP
Power Systems For head and low discharge the water turbine used Pelton wheel. propeller turbine. Kaplan wheel. Francis turbine. Pelton wheel. propeller turbine. Kaplan wheel. Francis turbine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the stator faults? All of these over current Inter phase faults failure of excitation All of these over current Inter phase faults failure of excitation ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 5 sec. 10 sec. 20 sec. none of these. 5 sec. 10 sec. 20 sec. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In Francis turbine runner, the number blades is usually of the order of 3 - 6. 6 - 8. 12 - 14. 16 - 24. 3 - 6. 6 - 8. 12 - 14. 16 - 24. ANSWER DOWNLOAD EXAMIANS APP
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