Power Systems A 25 MVA, 11 kV alternator is supplying full load at a point of 0.75 lagging. Determine the percentage increase in earning capacity when it is operated at improved power factor of 0.96 lagging. 56 %. None of above 28 %. 14 %. 56 %. None of above 28 %. 14 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems When a neutral point of 3 - Φ system is directly connected to earth then it has what type of grounding? Resistance. Solid. Reactance. Peterson coil. Resistance. Solid. Reactance. Peterson coil. ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a biased differential relay the bias is defined as the ratio of fault current and operating coil current. operating coil current and restraining coil current. fault current and restraining coil current. number of turns of restraining and operating coil. fault current and operating coil current. operating coil current and restraining coil current. fault current and restraining coil current. number of turns of restraining and operating coil. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 60 Hz is 1 kW/km per phase. What is the corona loss at 50 Hz in kW/km per phase? 1.13 0.93 0.882 1 1.13 0.93 0.882 1 ANSWER DOWNLOAD EXAMIANS APP
Power Systems On which one of the following cycles does a modern steam power plant work? Rankine cycle Carnot cycle Otto cycle Bell-Coleman cycle Rankine cycle Carnot cycle Otto cycle Bell-Coleman cycle ANSWER DOWNLOAD EXAMIANS APP
Power Systems Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching SF6. oil. vacuum. air blast. SF6. oil. vacuum. air blast. ANSWER DOWNLOAD EXAMIANS APP
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