DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? Transformer may start to smoke and burn No effect Transformer will operate with high efficiency Transformer will operate with low efficiency Transformer may start to smoke and burn No effect Transformer will operate with high efficiency Transformer will operate with low efficiency ANSWER EXPLANATION DOWNLOAD EXAMIANS APP transformer works on principle of faraday's law of electromagnetic induction. So if D.C supply use, no indction are produced and due to this E.M.F not induced in winding and transfer of electrical energy is not possible.
DGVCL Exam Paper (12-06-2016) The rating of transformer may be expressed in _____ kVA kW kVAR Horse power kVA kW kVAR Horse power ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equipment : RatingTransformer : kVAAlternator : kVAMotor : kW/HPBattery : ampere-hour
DGVCL Exam Paper (12-06-2016) The acting contacts for a circuit breakers are made of : Stainless Steel Porcelain Copper Tungsten alloy Hard-pressed carbon Stainless Steel Porcelain Copper Tungsten alloy Hard-pressed carbon ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer has _____ Primary winding and secondary winding Auxiliary winding and secondary winding None of these Primary winding and Auxiliary winding Primary winding and secondary winding Auxiliary winding and secondary winding None of these Primary winding and Auxiliary winding ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Directional relays are based on flow of Power Current Voltage All of these Power Current Voltage All of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The following formula is correct: Load facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period + Peak load for the same period All of these Load factor = Average load for a period x Peak load for the same period Load facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period + Peak load for the same period All of these Load factor = Average load for a period x Peak load for the same period ANSWER DOWNLOAD EXAMIANS APP
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