Power Systems Which of the following faults is/are treated as external faults? Failure of excitation All of these Over voltage Failure of prime mover of the generator Failure of excitation All of these Over voltage Failure of prime mover of the generator ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is 55.56 MVAr. 61.73 MVAr. 45.0 MVAr. 40.5 MVAr. 55.56 MVAr. 61.73 MVAr. 45.0 MVAr. 40.5 MVAr. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Reactance relays are used for the protection of medium transmission lines only short transmission lines only All of these long transmission lines only medium transmission lines only short transmission lines only All of these long transmission lines only ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be 57.5 MW. 52 MW. 51.61 MW. 53 MW. 57.5 MW. 52 MW. 51.61 MW. 53 MW. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The surge impedance of a 400 km long overhead transmission line is 420 Ω. For a 200 km length of the same line, the surge impedance will be 840 Ω 420 Ω 400 Ω 210 Ω 840 Ω 420 Ω 400 Ω 210 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems The daily energy produced in thermal power station is 720 MWh at a load factor of 0.6. What is the maximum demand of the station? 720 MW 72 MW 30 MW 50 MW 720 MW 72 MW 30 MW 50 MW ANSWER DOWNLOAD EXAMIANS APP
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