DGVCL Exam Paper (12-06-2016) Reactance relay is used for protection against: Over voltage fault None of these Phase fault Earth fault Over voltage fault None of these Phase fault Earth fault ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce eddy current losses Reduce hysteresis loss Reduce all above losses Reduce copper losses Reduce eddy current losses Reduce hysteresis loss Reduce all above losses Reduce copper losses ANSWER EXPLANATION DOWNLOAD EXAMIANS APP To reduce eddy current loss laminations is done.To reduce hysteresis loss good magnetic material (whose specific hysterisis loss is low) is used.
DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? No effect Transformer will operate with high efficiency Transformer may start to smoke and burn Transformer will operate with low efficiency No effect Transformer will operate with high efficiency Transformer may start to smoke and burn 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) You should choose Sleep option when The computer is tired after working for the whole day. You are leaving for a very short time and want to resume your work shortly. You finish working and are going to bed. When computer gets hanged frequently. Let it sleep for some time. The computer is tired after working for the whole day. You are leaving for a very short time and want to resume your work shortly. You finish working and are going to bed. When computer gets hanged frequently. Let it sleep for some time. ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The rating of fuse wire is always expressed in _____ Ampere-volts kWh Amperes Ampere-hours Ampere-volts kWh Amperes Ampere-hours ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equipment :Rating Fuse : AmpereTransformer : kVAAlternator : kVAMotor : kW/HPBattery : ampere-hour
DGVCL Exam Paper (12-06-2016) Admittance relay is _____ relay. None of these Non-directional Impedance Directional None of these Non-directional Impedance Directional ANSWER DOWNLOAD EXAMIANS APP
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