Power Systems If the inertia constant H = 10 MJ/MVA for a 50 MVA generator, the stored energy is 10 MJ 5 MJ 500 MJ 50 MJ 10 MJ 5 MJ 500 MJ 50 MJ ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following grounding is not practically preferred for protection of equipments? resistance grounding reactance grounding All of these isolated grounding resistance grounding reactance grounding All of these isolated grounding ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ABCD constants of a 3-phase transmission line are A = D = 0.8∠1°, B = 170∠85° Ω , C = 0.002∠90.4° ℧. The sending end voltage is 400 kV. The receiving end voltage under no load condition is 500 kV 600 kV 400 kV 350 kV 500 kV 600 kV 400 kV 350 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems If, for a given alternator in economic operation mode, the incremental cost is given by (0.012 P + 8) Rs/MWh, dPL/dP = 0.2 and plant λ = 25, then power generation is 750 MW 1500 MW 1000 MW 1250 MW 750 MW 1500 MW 1000 MW 1250 MW 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? 9.68 4.68 msec 1.47 msec 2.63 msec 9.68 4.68 msec 1.47 msec 2.63 msec ANSWER DOWNLOAD EXAMIANS APP
Power Systems What are the methods of laying underground cables? None of these. Draw - in - system / duct - pipe laying. Both A and B. Direct laying. None of these. Draw - in - system / duct - pipe laying. Both A and B. Direct laying. ANSWER DOWNLOAD EXAMIANS APP
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