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 Which of the following faults is/are treated as external faults? All of these Failure of excitation Over voltage Failure of prime mover of the generator All of these Failure of excitation Over voltage Failure of prime mover of the generator ANSWER DOWNLOAD EXAMIANS APP
Power Systems Surge impedance loading (SIL) is represented by both 1 and 2 Vl²*√(C/L) Vl²/Zs Vph²/Zs both 1 and 2 Vl²*√(C/L) Vl²/Zs Vph²/Zs ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conversion ratio of breeder reactor are 1. less than 1. greater than 1. none of above. 1. less than 1. greater than 1. none of above. 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 3.75 pu 2.5 pu 4.28 pu 7.25 pu 3.75 pu 2.5 pu 4.28 pu 7.25 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Keeping in view the cost and overall effectiveness, the following circuit breaker is best suited for capacitor bank switching? SF6 CB. Air blast CB. Oil CB. Vacuum CB. SF6 CB. Air blast CB. Oil CB. Vacuum CB. ANSWER DOWNLOAD EXAMIANS APP
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