Power Systems Which of the following circuit breakers produce least arc energy? Air blast CB. Plain oil CB. Minimum oil CB. Air break CB. Air blast CB. Plain oil CB. Minimum oil CB. Air break CB. ANSWER DOWNLOAD EXAMIANS APP
Power Systems If the breakdown voltage of the insulator is high, the thickness of the insulator is it does not related to breakdown voltage high None of these less it does not related to breakdown voltage high None of these less ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is true? Corona loss increases with increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency increase in conductor size and decrease in supply frequency decrease in conductor size and increase in supply frequency increase in conductor size and increase in supply frequency decrease in conductor size and decrease in supply frequency ANSWER DOWNLOAD EXAMIANS APP
Power Systems In thermal power stations, economiser will increase the thermal efficiency both 2 and 3 reduce the heat reduce the thermal efficiency increase the thermal efficiency both 2 and 3 reduce the heat reduce the thermal efficiency ANSWER DOWNLOAD EXAMIANS APP
Power Systems Frequencies must be same in which of the following line to exchange the power from one place to other place ? No need of same frequency for exchange of power Asynchronous line both 1 and 2 Synchronous line No need of same frequency for exchange of power Asynchronous line both 1 and 2 Synchronous line ANSWER DOWNLOAD EXAMIANS APP
Power Systems The presence of earth in case of overhead lines decrease inducatance increase inductance decrease capacitance increase capacitance decrease inducatance increase inductance decrease capacitance increase capacitance ANSWER DOWNLOAD EXAMIANS APP
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