Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is 38.6 23.9 35.45 31.7 38.6 23.9 35.45 31.7 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following power planets is the least reliable Solar. Wind. Geothermal. Tidal. Solar. Wind. Geothermal. Tidal. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be 10.936 pu 9.936 pu 8.936 pu 7.936 pu 10.936 pu 9.936 pu 8.936 pu 7.936 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following power plants can generate power at unpredictable or uncontrollable time Wind turbine. Pulverising unit. Condenser. Cooling tower. Wind turbine. Pulverising unit. Condenser. Cooling tower. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has 200 km operating at frequency of 10 Hz Hz. Find the type of the line any of the above short transmission line medium transmission line long transmission line any of the above short transmission line medium transmission line long transmission line ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage? 18.18 kV 81.82 kV -81.82 kV -18.18 kV 18.18 kV 81.82 kV -81.82 kV -18.18 kV ANSWER DOWNLOAD EXAMIANS APP
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