Power Systems Which of the following decides the insulation level of 400 kV, EHV line? skin effect radio interference switching over voltage lighting voltage skin effect radio interference switching over voltage lighting voltage ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relay is usually employed for protection of short transmission lines only long transmission lines only any line medium transmission lines only short transmission lines only long transmission lines only any line medium transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems Advantages of pumped storage plants is/are used as load frequency control operating time is minimum most economical as a peak load supply plant All of these used as load frequency control operating time is minimum most economical as a peak load supply plant All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems The value of diversity factor is 1 0 less than 1 greater than 1 1 0 less than 1 greater than 1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 85% 11.8% 88.2% 15% 85% 11.8% 88.2% 15% 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
EXAMIANS