Power Systems Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer? delta-star star-delta delta-delta star-star delta-star star-delta delta-delta star-star ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of following power plants is free from environmental problem Hydroelectric. Nuclear. Steam. Diesel engine. Hydroelectric. Nuclear. Steam. Diesel engine. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The pu parameters for a 500 MVA machine on its own base are: Inertia, H = 20 pu; reactance X = 2 pu. The pu values of inertia and reactance on 100 MVA common base, respectively, are 4, 10 100, 0.4 100, 10 4, 0.4 4, 10 100, 0.4 100, 10 4, 0.4 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used for protection of equipment from open circuits protection of equipment from short circuits All of these protection of equipment from external lightning protection of equipment from open circuits protection of equipment from short circuits All of these protection of equipment from external lightning ANSWER DOWNLOAD EXAMIANS APP
Power Systems The overall efficiency of a steam power plant equal to the Rankine cycle. product of boiler efficiency, turbine efficiency and generator efficiency. regenerative cycle. binary vapor cycle. the Rankine cycle. product of boiler efficiency, turbine efficiency and generator efficiency. regenerative cycle. binary vapor cycle. 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 12.5 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
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