Power Systems Gross head of an hydroelectric power station is the difference of water level between the level in storage and tail race. all of above. the height of water level in the river where the storage is provided. the height of water level in the river where the tail race is provided. the difference of water level between the level in storage and tail race. all of above. the height of water level in the river where the storage is provided. the height of water level in the river where the tail race is provided. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The annual depreciation of hydro power plant is about 10 - 15 %. 15 - 20 %. 0.5 - 1.5 %. 20 - 25 %. 10 - 15 %. 15 - 20 %. 0.5 - 1.5 %. 20 - 25 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If a 500 MVA, 11 kV 3-phase generator at 50 Hz feeds through a transfer impedance of (0+j0.605) Ω/phase, an infinite voltage also at 11 kV, then the maximum steady state power transfer on the base of 500 MVA and 11 kV is 1 pu 0.5 pu 0.8 pu 0.4 pu 1 pu 0.5 pu 0.8 pu 0.4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage? -81.82 kV -18.18 kV 18.18 kV 81.82 kV -81.82 kV -18.18 kV 18.18 kV 81.82 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit value of a 2 ohm resistor at 100 MVA and 10 kV base voltage is 2 pu 0.5 pu 0.2 pu 4 pu 2 pu 0.5 pu 0.2 pu 4 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? Corona is reduced by All of these increasing the radius of the conductor decreasing the supply frequency increasing the distance between the conductor All of these increasing the radius of the conductor decreasing the supply frequency increasing the distance between the conductor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS