DGVCL Exam Paper (12-06-2016) The friction losses in Real Transformers are : 0.5 0.25 0.05 0 0.5 0.25 0.05 0 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP As there is no rotating part in transformer, there is no friction and windage loss
DGVCL Exam Paper (12-06-2016) Taskbar is used for Navigation program Switching between program All of above Start a program Navigation program Switching between program All of above Start a program ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A circuit breaker is designed to protect an electrical circuit from damage caused by : Over load All of these Short circuit Over current Over load All of these Short circuit Over current ANSWER DOWNLOAD EXAMIANS APP
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) What will happen if the primary of a transformer is connected to DC supply? Transformer will operate with high efficiency Transformer may start to smoke and burn No effect Transformer will operate with low efficiency Transformer will operate with high efficiency Transformer may start to smoke and burn No effect 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) For cost & safety, the outdoor substations are installed for voltages above: 33 kV 11 kV 60 kV 110 kV 33 kV 11 kV 60 kV 110 kV ANSWER DOWNLOAD EXAMIANS APP
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