Power Systems A 20 MVA generator has inertia constant of 0.5 pu. Find new value for 50 MVA base? 0.5 pu 0.1 pu 0.4 pu 0.2 pu 0.5 pu 0.1 pu 0.4 pu 0.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following circuit breakers produce least arc energy? Air break CB. Air blast CB. Plain oil CB. Minimum oil CB. Air break CB. Air blast CB. Plain oil CB. Minimum oil CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The steam power plant efficiency can be improved by burning large amount of coal. using large quantity of water. decreasing the load on the plant. using high temperature and high pressure steam. burning large amount of coal. using large quantity of water. decreasing the load on the plant. using high temperature and high pressure steam. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Binary vapor cycle are used for All of these improving the plant efficiency. improving the condenser performance. increasing the turbine efficiency. All of these improving the plant efficiency. improving the condenser performance. increasing the turbine efficiency. ANSWER DOWNLOAD EXAMIANS APP
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 12.5 electrical degrees/s² 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 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The receiving end voltage for a long line under no load condition is more than the sending end voltage equal to the sending end voltage any of the above less than the sending end voltage more than the sending end voltage equal to the sending end voltage any of the above less than the sending end voltage ANSWER DOWNLOAD EXAMIANS APP
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