Power Systems A 10 MVA generator has reactance of 0.2 pu. Find the new reactance value for 50 MVA base? 1 pu 0.2 pu 0.25 pu 5 pu 1 pu 0.2 pu 0.25 pu 5 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems The draft tube is provided to increase the acting head on the water wheel. None of these raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. increase the acting head on the water wheel. None of these raise the water surface of the stream to create an artificial head. reduce the effect of water hammer. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following decides the insulation level of 400 kV, EHV line? radio interference skin effect switching over voltage lighting voltage radio interference skin effect switching over voltage lighting voltage ANSWER DOWNLOAD EXAMIANS APP
Power Systems A fault occurring at the terminals of an unloaded synchronous generator operating at its rated voltage has resulted in the following values of currents and voltages. IR0 = j 2.37 pu IR1 = -j 3.05 pu IR2 = j 0.68 pu VR0 = VR1 = VR2 = 0.237 pu. Which of the following faults has occurred? LLG LL LG LLL LLG LL LG LLL ANSWER DOWNLOAD EXAMIANS APP
Power Systems Incremental cost of two generators Ic1 = 0.2 P1+60, Ic2 = 0.3 P2+40 and the ratings of the generator are 150 and 250 MW. Find the load sharing of each generator for a load of 200 MW? P1 = 80 MW, P2 = 120 MW P1 = 60 MW, P2 = 140 MW P1 = 100 MW, P2 = 100 MW P1 = 120 MW, P2 = 80 MW P1 = 80 MW, P2 = 120 MW P1 = 60 MW, P2 = 140 MW P1 = 100 MW, P2 = 100 MW P1 = 120 MW, P2 = 80 MW ANSWER DOWNLOAD EXAMIANS APP
Power Systems The function of draft tube is reaction turbine is to increase flow rate of water. convert kinetic energy of water. reduce water hammer. all of above. increase flow rate of water. convert kinetic energy of water. reduce water hammer. all of above. ANSWER DOWNLOAD EXAMIANS APP
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