Power Systems If L and C are 4 mH and 0.0001 μF respectively a current chop of magnitude 50 Amp would induced a voltage 400 kV. 100 kV. 200 kV. 50 kV. 400 kV. 100 kV. 200 kV. 50 kV. ANSWER DOWNLOAD EXAMIANS APP
Power Systems At slack bus, which one of the following combinations of variables is not specified? P and Q P and V V and δ Q and V P and Q P and V V and δ Q and V ANSWER DOWNLOAD EXAMIANS APP
Power Systems One million cubic meters of water is stored in a reservoir feeding a water turbine. The density of water is 993 kg/m³. If the centre of mass of water is 50 meters above the turbine and losses are negligible, the energy produced by that volume of water is 120 MWhr 135.3 MWhr 140 MWhr 130.2 MWhr 120 MWhr 135.3 MWhr 140 MWhr 130.2 MWhr 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? 3.975 pu 1.375 pu 2.4 pu 0.2 pu 3.975 pu 1.375 pu 2.4 pu 0.2 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of short transmission line is up to 40 km 150 km 80 km any of the above 40 km 150 km 80 km any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the inertia constant H = 8 MJ/MVA for a 50 MVA generator, the stored energy is 8 MJ 50 MJ 200 MJ 400 MJ 8 MJ 50 MJ 200 MJ 400 MJ ANSWER DOWNLOAD EXAMIANS APP
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