Power Systems For 66 kV lines the number of insulator discs of each 11 kV used are 5 6 3 12 5 6 3 12 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A pin type insulator has 100 kV puncture voltage. If 10 kV flash over voltage occurred in a transmission line, then find the safety factor of insulator? 0.1 10 0.001 1000 0.1 10 0.001 1000 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The ground capacitance existing between transmission line and ground is 4µF. Find the inductive reactance of the peterson coil for compensation of arcing grounds? 855.26 Ω 0.844 Ω 265.25 Ω 625.35 Ω 855.26 Ω 0.844 Ω 265.25 Ω 625.35 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following buses is/are not PV buses? reactive power support buses fixed shunt capacitor buses voltage control buses both 1 and 2 reactive power support buses fixed shunt capacitor buses voltage control buses both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 MVA alternator operating at full load at 50 Hz. H = 4 MWsec/MVA, Td = 0.5 sec. One of the transmission line is tripped. So that output of generator is reduced to 70 MW. Find the frequency deviation during this time? 0.92 -0.56 -0.92 0.56 0.92 -0.56 -0.92 0.56 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power station has a maximum demand of 15000 kW. The annual load factor is 50% and plant capacity factor is 40%. What is the reserve capacity of the plant? 3000 kW 7500 kW 6000 kW 3750 kW 3000 kW 7500 kW 6000 kW 3750 kW ANSWER DOWNLOAD EXAMIANS APP
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