Power Systems Condition for zero voltage regulation is tanφ = X/R tanφ = R/X cosφ = R/X cosφ = X/R tanφ = X/R tanφ = R/X cosφ = R/X cosφ = X/R ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has impedance of (0.005 + j0.05) pu. Find the line at which maximum value of negative DC off set current is produced, if it is applied with Vm cosωt? 4.68 msec 1.47 msec 9.68 2.63 msec 4.68 msec 1.47 msec 9.68 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems In nuclear power plants which material is/are used as coolant? beryllium liquid sodium All of these graphite beryllium liquid sodium All of these graphite ANSWER DOWNLOAD EXAMIANS APP
Power Systems In case of failure of prime mover of the generator, which type of relay is used? distance relays offset mho relay impedance relay reverse power relay distance relays offset mho relay impedance relay reverse power relay ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of draft tube is reaction turbine is to convert kinetic energy of water. reduce water hammer. increase flow rate of water. all of above. convert kinetic energy of water. reduce water hammer. increase flow rate of water. all of above. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is 8.06 Ω / phase. 2.26 Ω / phase. 4.65 Ω / phase. 6.06 Ω / phase. 8.06 Ω / phase. 2.26 Ω / phase. 4.65 Ω / phase. 6.06 Ω / phase. ANSWER DOWNLOAD EXAMIANS APP
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