DGVCL Exam Paper (12-06-2016) Step-down transformer converts high voltage and low current into: Low voltage and high current How voltage and high current High voltage and low current None of these Low voltage and high current How voltage and high current High voltage and low current None of these 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) The arc temperature in Oil Circuit Breaker may reach up to _____ 10,000° K 8,000° K 5,000° K None of these 10,000° K 8,000° K 5,000° K None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Isolator in substation is open under _____ condition. No load Short circuit Full load None of these No load Short circuit Full load None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Isolators do not have capacity to make or breake circuit when current flowing in circuit
DGVCL Exam Paper (12-06-2016) A circuit breaker is designed to protect an electrical circuit from damage caused by : Over load Short circuit All of these Over current Over load Short circuit All of these Over current ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The voltage of transmission can be regulated by Use of capacitors to neutralize the effect of series reactance Any of the above methods Use of tap changing transformers Switching in shunt capacitors at the receiving end during heavy loads Use of capacitors to neutralize the effect of series reactance Any of the above methods Use of tap changing transformers Switching in shunt capacitors at the receiving end during heavy loads ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The overall efficiency of Thermal Power Plant is equal to _____ None of these Renkine Cycle Efficiency Carnot cycle efficiency Regenerative Cycle Efficiency None of these Renkine Cycle Efficiency Carnot cycle efficiency Regenerative Cycle Efficiency ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Product of boiler efficiency, turbine efficiency and generator efficiency.