DGVCL Exam Paper (12-06-2016) The permissible voltage variation in transmission and distribution system is: ±10% ± 1% ± 0.1% ± 25% ±10% ± 1% ± 0.1% ± 25% ANSWER EXPLANATION DOWNLOAD EXAMIANS APP This answer is as per official key of respective exam.
DGVCL Exam Paper (12-06-2016) The Minimum Oil Circuit Breaker (MOCB) is named because of : Reduced requirement of air All of these Reduced requirement of oil None of these Reduced requirement of air All of these Reduced requirement of oil None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce eddy current losses Reduce all above losses Reduce hysteresis loss Reduce copper losses Reduce eddy current losses Reduce all above losses Reduce hysteresis loss 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) The following is/are the characteristics of SF₆ circuit breakers: None of these It does not need an auxiliary breaking chamber All of these Short break time of 2 to 2.5 cycles None of these It does not need an auxiliary breaking chamber All of these Short break time of 2 to 2.5 cycles ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Step-down transformer converts high voltage and low current into: High voltage and low current None of these How voltage and high current Low voltage and high current High voltage and low current None of these How voltage and high current Low voltage and high current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In step up votlage,Output votlage > Input votlageOutput current < Input currentIn step down transformerOutput votlage < Input votlageOutput current > Input current.Power and frequency remains almost constant in stepup or stepdown transformer.
DGVCL Exam Paper (12-06-2016) Transformer has _____ None of these Auxiliary winding and secondary winding Primary winding and secondary winding Primary winding and Auxiliary winding None of these Auxiliary winding and secondary winding Primary winding and secondary winding Primary winding and Auxiliary winding ANSWER DOWNLOAD EXAMIANS APP
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