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 45.0 MVAr. 40.5 MVAr. 55.56 MVAr. 61.73 MVAr. 45.0 MVAr. 40.5 MVAr. 55.56 MVAr. 61.73 MVAr. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following grounding is not practically preferred for protection of equipments? resistance grounding reactance grounding isolated grounding All of these resistance grounding reactance grounding isolated grounding All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a pumped storage power plant is operated in conjunction with a steam power plant All of these the operating cost of the steam plant become optimum chances of the tripping of the system decrease load factor of the steam plant is increased All of these the operating cost of the steam plant become optimum chances of the tripping of the system decrease load factor of the steam plant is increased ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? The elements of each row of a Y bus matrix for load flow studies in power system add up to zero if the mutual couplings between transmission lines are absent always if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored if the mutual couplings between transmission lines are absent always if both 2 and 3 are satisfied if the shunt admittances at the buses are ignored ANSWER DOWNLOAD EXAMIANS APP
Power Systems Length of short transmission line is up to 40 km 150 km 80 km any of the above 40 km 150 km 80 km any of the above ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 45 kV 32 kV 36 kV 40 kV 45 kV 32 kV 36 kV 40 kV ANSWER DOWNLOAD EXAMIANS APP
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