DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? Transformer may start to smoke and burn No effect Transformer will operate with high efficiency Transformer will operate with low efficiency Transformer may start to smoke and burn No effect Transformer will operate with high efficiency 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) Isolator in substation is open under _____ condition. Full load Short circuit No load None of these Full load Short circuit No 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) The registered office of MGVCL is in _____ Valsad Vadodara Ahmedabad Godhra Valsad Vadodara Ahmedabad Godhra ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Company : Registered OffficePGVCL : RajkotMGVCL : VadodaraDGVCL : SuratUGVCL : MehsanaGETCO : VadodaraGUVNL : Vadodara
DGVCL Exam Paper (12-06-2016) If 3000 kW power is to be transmitted over a distance of 30 km, the desirable transmission voltage will be 11 kV 33 kV 132 kV 66 kV 11 kV 33 kV 132 kV 66 kV ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Cylindrical type transformer has: None of these Double magnetic circuit All of these Single magnetic circuit None of these Double magnetic circuit All of these Single magnetic circuit ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The following is/are the characteristics of SF₆ circuit breakers: It does not need an auxiliary breaking chamber None of these Short break time of 2 to 2.5 cycles All of these It does not need an auxiliary breaking chamber None of these Short break time of 2 to 2.5 cycles All of these ANSWER DOWNLOAD EXAMIANS APP
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