Power Systems Mho relay is usually employed for protection of medium transmission lines only short transmission lines only long transmission lines only any line medium transmission lines only short transmission lines only long transmission lines only any line ANSWER DOWNLOAD EXAMIANS APP
Power Systems To protect the power transformer ( Y-Y with neutral grounded) against fault, which type of connection do the current transformers have? Δ-Y connection Δ-Δ connection Y-Δ connection Y-Y connection Δ-Y connection Δ-Δ connection Y-Δ connection Y-Y connection ANSWER DOWNLOAD EXAMIANS APP
Power Systems The area under a flow duration curve represents total of units of energy available. total quantity of run-off during that period. total power available. maximum rate of run-off during the period. total of units of energy available. total quantity of run-off during that period. total power available. maximum rate of run-off during the period. 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 22.5 electrical degrees/s² 12.5 electrical degrees/s² 225 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 12.5 electrical degrees/s² 225 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. Both 1 and 2 High relative permittivity Low ratio of puncture strength to flash over. High ratio of puncture strength to flash over. Both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a power system with negligible resistance, the fault current at a point is 8.00 pu. The series reactance is to be included at the fault point to limit the short circuit. current to 5.00 pu is 0.125 pu. 3.000 pu. 0.200 pu. 0.075 pu. 0.125 pu. 3.000 pu. 0.200 pu. 0.075 pu. ANSWER DOWNLOAD EXAMIANS APP
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