Power Systems If the fault current is 2000 A, the relay setting is 50% and CT ratio is 400 : 5, then plug setting multiplier will be 15. 10. 50. 25. 15. 10. 50. 25. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Among the following which is not non conventional energy Wind. Tidal. Geothermal. Nuclear. Wind. Tidal. Geothermal. Nuclear. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power system network has a total power of 5000 MW at 50 Hz supplying to the different consumers. Frequency is varying at 1.5% per change of 2% load. Assume R =0.004 Hz/MW. Find the steady state frequency deviation if a sudden loss of 200 MW occur due to tripping of one of the transmission line? 0.48 Hz -0.52 Hz 0.52 Hz 50 Hz 0.48 Hz -0.52 Hz 0.52 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
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 35.45 38.6 31.7 23.9 35.45 38.6 31.7 23.9 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Per unit of any quantity is defined as base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units base value of quantity /actual value of quantity in different units actual value of quantity /base value of quantity in same units base value of quantity /actual value of quantity in same units actual value of quantity /base value of quantity in different units 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 9.936 pu 8.936 pu 10.936 pu 7.936 pu 9.936 pu 8.936 pu 10.936 pu 7.936 pu ANSWER DOWNLOAD EXAMIANS APP
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