Power Systems For large plants of capacity for more than 15 MW, what type of cooling is used Air. Hydrogen. Liquid. Water. Air. Hydrogen. Liquid. Water. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 2.4 pu 1.375 pu 3.975 pu 0.2 pu 2.4 pu 1.375 pu 3.975 pu 0.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems To reduce the radio interference which line is/are transposed? None of these either 1 or 2 Power line Both power and telecommunication lines None of these either 1 or 2 Power line Both power and telecommunication lines ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following faults is/are treated as external faults? Failure of excitation All of these Over voltage Failure of prime mover of the generator Failure of excitation All of these Over voltage Failure of prime mover of the generator ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following relationships are not valid for short transmission lines A = D = 1 B = C = Z Is = Ir All of these A = D = 1 B = C = Z Is = Ir All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is not a secondary nuclear fuel U235. None of above. Pu239. U233. U235. None of above. Pu239. U233. ANSWER DOWNLOAD EXAMIANS APP
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