Power Systems Surge impedance loading (SIL) is represented by Vl²*√(C/L) both 1 and 2 Vl²/Zs Vph²/Zs Vl²*√(C/L) both 1 and 2 Vl²/Zs Vph²/Zs ANSWER DOWNLOAD EXAMIANS APP
Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 500 MVA 125 MVA 100 MVA 400 MVA 500 MVA 125 MVA 100 MVA 400 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used to protect electrical equipment against direct strokes of lightning. power frequency of over voltages. over currents due to lightning stroke. over voltages due to indirect lightning stroke. direct strokes of lightning. power frequency of over voltages. over currents due to lightning stroke. over voltages due to indirect lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the conductor diameter decreases, inductance of the line, remains unaffected decreases increases None of these remains unaffected decreases increases None of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of high energy loss from turbine exhaust to condenser. low steam turbine mechanical efficiency. high energy loss in boiler. low alternative efficiency. high energy loss from turbine exhaust to condenser. low steam turbine mechanical efficiency. high energy loss in boiler. low alternative efficiency. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relay is usually employed for protection of long transmission lines only medium transmission lines only short transmission lines only any line long transmission lines only medium transmission lines only short transmission lines only any line ANSWER DOWNLOAD EXAMIANS APP
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