Power Systems The inertia constant of 100 MVA, 50 Hz, 4 pole generator is 10 MJ/MVA. If the mechanical input to the machine is suddenly raised from 50 MW to 75 MW, the rotor acceleration will be equal to 22.5 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² 22.5 electrical degrees/s² 225 electrical degrees/s² 12.5 electrical degrees/s² 125 electrical degrees/s² ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following represents the sag(S) of a transmission line? S = wl²/4T S = wl²/8T S = wl²/2T S = wl²/16T S = wl²/4T S = wl²/8T S = wl²/2T S = wl²/16T ANSWER DOWNLOAD EXAMIANS APP
Power Systems An ACSR conductor has internal inductance 0.05 mH/Km for µr = 1. If this ACSR is replaced with another having µr = 2, then find the internal inductance? 0 mH/Km 0.05 mH/Km 0.1 mH/Km 0.025 mH/Km 0 mH/Km 0.05 mH/Km 0.1 mH/Km 0.025 mH/Km ANSWER DOWNLOAD EXAMIANS APP
Power Systems If R = 84 ohm/Km, G = 10-6 mho/Km, H = 0.01 H/Km, C = 0.061 μ F/Km and frequency = 1000 Hz, then what is the value of propagation constant of the transmission line None of them. 0.018 per Km. 0.01 + j 0.02 per Km. 0.09 + j 0.018 per Km. None of them. 0.018 per Km. 0.01 + j 0.02 per Km. 0.09 + j 0.018 per Km. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reactance relays are used for the protection of All of these medium transmission lines only long transmission lines only short transmission lines only All of these medium transmission lines only long transmission lines only short transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems For head and low discharge the water turbine used Francis turbine. Pelton wheel. propeller turbine. Kaplan wheel. Francis turbine. Pelton wheel. propeller turbine. Kaplan wheel. ANSWER DOWNLOAD EXAMIANS APP
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