Power Systems In a three-phase system, when the loads are perfectly balanced, the neutral current is zero. one - third of minimum. two - thirds of maximum. one - third of maximum. zero. one - third of minimum. two - thirds of maximum. one - third of maximum. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The thermal efficiency of BWR is greater than that of PWR. None of these less than that of PWR. equal to that of PWR. greater than that of PWR. None of these less than that of PWR. equal to that of PWR. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant Use of high pressure. All of these Reheat of steam an intermediate stages. Use of steam for heating of boiler feed water. Use of high pressure. All of these Reheat of steam an intermediate stages. Use of steam for heating of boiler feed water. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following is/are the desirable properties of a insulator material? High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. High relative permittivity Both 1 and 2 High ratio of puncture strength to flash over. Low ratio of puncture strength to flash over. High relative permittivity Both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 11.8% 88.2% 85% 15% 11.8% 88.2% 85% 15% ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the conductor diameter decreases, inductance of the line, decreases remains unaffected increases None of these decreases remains unaffected increases None of these ANSWER DOWNLOAD EXAMIANS APP
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