Power Systems Which of the following relays are used in protection of medium transmission lines? any of the above Admittance relays Impedance relays Mho relays any of the above Admittance relays Impedance relays Mho relays ANSWER DOWNLOAD EXAMIANS APP
Power Systems The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be 0.60 0.30 0.0060 0.0030 0.60 0.30 0.0060 0.0030 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Maximum power transfer in a transmission line can be obtained by reducing reactance either 1 or 2 None of these increasing voltage level reducing reactance either 1 or 2 None of these increasing voltage level 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 53 MW. 52 MW. 51.61 MW. 57.5 MW. 53 MW. 52 MW. 51.61 MW. 57.5 MW. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The voltage and current instantaneous values are given as 5 sin (ωt + 30°) pu and 2 sin (ωt - 15°) pu respectively. Find the per unit active power? 5.353 pu 5 pu 7 pu 3.535 pu 5.353 pu 5 pu 7 pu 3.535 pu 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? either 1 or 2 True None of these False either 1 or 2 True None of these False ANSWER DOWNLOAD EXAMIANS APP
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