Power Systems Characteristics of arc quenching medium is/are High thermal conductivity All of these Non flammable High dielectric strength High thermal conductivity All of these Non flammable High dielectric strength ANSWER DOWNLOAD EXAMIANS APP
Power Systems The charging current of a 400 kV line is more than that of a 220 kV line of the same length? False None of these True either 1 or 2 False None of these True either 1 or 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems An unloaded generator with a pre-fault voltage 1 pu has the following sequence impedance: Z0 = j 0.15 pu, Z1 = Z2 = j 0.25 pu The neutral is grounded with a reactance of 0.05 pu. The fault current in pu for single line to ground fault is 2.5 pu 3.75 pu 4.28 pu 7.25 pu 2.5 pu 3.75 pu 4.28 pu 7.25 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems If we increase the length of the transmission line, the charging current increases remains unaffected None of these decreases increases remains unaffected None of these decreases ANSWER DOWNLOAD EXAMIANS APP
Power Systems Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses? 102.5 95.5 85.5 105.2 102.5 95.5 85.5 105.2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The power output of a nuclear power station is proportional to the rate at which fission reaction occurs. square of the rate at which fission reaction occurs. square root of the rate at which fission reaction occurs. none of above. the rate at which fission reaction occurs. square of the rate at which fission reaction occurs. square root of the rate at which fission reaction occurs. none of above. ANSWER DOWNLOAD EXAMIANS APP
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