DGVCL Exam Paper (12-06-2016) The friction losses in Real Transformers are : 0 0.05 0.25 0.5 0 0.05 0.25 0.5 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) 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 load of a consumer is generally measured in terms of : Ampere hour kW Volts Amperes Ampere hour kW Volts Amperes ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Earthing switch is used for? Measuring of safety voltage Discharging residual energies All of these Protection of equipment from ground faults Measuring of safety voltage Discharging residual energies All of these Protection of equipment from ground faults ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) One kilowatt-hour is? 2.6 mega joules 1.6 mega joules 3.6 mega joules None of these 2.6 mega joules 1.6 mega joules 3.6 mega joules None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) For 11 kV line the inductance per km per phase will be of the order of: 0.1 H 1 mH 1 H 0.1 mH 0.1 H 1 mH 1 H 0.1 mH ANSWER DOWNLOAD EXAMIANS APP
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