DGVCL Exam Paper (12-06-2016) In case the height of transmission tower is increased, which of the following parameter is likely to change? Capacitance Resistance Inductance None of these Capacitance Resistance Inductance None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following is not a part of transformer installation? Buchholz Relay Conservator Exciter Breather Buchholz Relay Conservator Exciter Breather ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Exciter is used in alternator for field supply.
DGVCL Exam Paper (12-06-2016) The problematic pollutants in emission of coal based generating plants _____ All of these CO NOx SO₂ All of these CO NOx SO₂ ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Directional relays are based on flow of All of these Power Current Voltage All of these Power Current Voltage ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce hysteresis loss Reduce copper losses Reduce eddy current losses Reduce all above losses Reduce hysteresis loss Reduce copper losses Reduce eddy current losses Reduce all above 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 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 Transformer may start to smoke and burn No effect Eddy Current and Hysteresis losses will be excessive Current will be too much high Transformer may start to smoke and burn No effect Eddy Current and Hysteresis losses will be excessive ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Core loss of transformer = Hysteresis loss + eddy current lossHysteresis loss prpotional to feddy current loss prpotional to f².
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