Power Systems An over current relay, having a current setting of 125% connected to a supply circuit through a current transformer of ratio 400/5. The pick up value is 12.5 A 15 A 10 A 6.25 A 12.5 A 15 A 10 A 6.25 A 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 3750 kW 7500 kW 6000 kW 3000 kW 3750 kW 7500 kW 6000 kW ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 3-phase, 5 kV, 5 MVA system, what is the base impedance? 500 ohms 0.5 ohm 50 ohms 5 ohms 500 ohms 0.5 ohm 50 ohms 5 ohms ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a short circuit test circuit breaker, time to reach the peak re-striking voltage 60 microsecond & the peak re-striking voltage 120 kV. Determine average RRRV (Rate of rise re-striking voltage)? 3.5 × 106 kV / sec. 3 × 106 kV / sec. 2 × 106 kV / sec. 1 × 106 kV / sec. 3.5 × 106 kV / sec. 3 × 106 kV / sec. 2 × 106 kV / sec. 1 × 106 kV / sec. ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plat work Otto cycle. Rankine cycle. Bell - Coleman cycle. Carnot cycle. Otto cycle. Rankine cycle. Bell - Coleman cycle. Carnot cycle. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In load flow studies PV bus is treated as PQ bus when phase angle become high reactive power goes beyond limit any of the above voltage at the bus become high phase angle become high reactive power goes beyond limit any of the above voltage at the bus become high ANSWER DOWNLOAD EXAMIANS APP
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