DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary Through air None of these Through cooling coil By the flux Through air None of these Through cooling coil By the flux ANSWER EXPLANATION DOWNLOAD EXAMIANS APP function of transfomer is that transfer electrical energy from primary cicuit to secondary through magnetic cicuit by mutual induction
DGVCL Exam Paper (12-06-2016) With effect from _____ India has adopted a new legislation called the Electricity Act 2003. 3 June 2003 2 May 2003 None of these 2 June 2003 3 June 2003 2 May 2003 None of these 2 June 2003 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The rating of transformer may be expressed in _____ Horse power kW kVAR kVA Horse power kW kVAR kVA ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equipment : RatingTransformer : kVAAlternator : kVAMotor : kW/HPBattery : ampere-hour
DGVCL Exam Paper (12-06-2016) Which of the following is the least expensive protection for over current in low voltage system? Isolator Oil Circuit breaker Rewireable fuse Air break circuit breaker Isolator Oil Circuit breaker Rewireable fuse Air break circuit breaker ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: Current will be too much high No effect Eddy Current and Hysteresis losses will be excessive Transformer may start to smoke and burn Current will be too much high No effect Eddy Current and Hysteresis losses will be excessive Transformer may start to smoke and burn ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Core loss of transformer = Hysteresis loss + eddy current lossHysteresis loss prpotional to feddy current loss prpotional to f².
DGVCL Exam Paper (12-06-2016) The SI unit of energy is : Newton Joule Henry Coulomb Newton Joule Henry Coulomb ANSWER DOWNLOAD EXAMIANS APP
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