DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? 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 Transformer may start to smoke and burn 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) Earthing switch is used for? All of these Measuring of safety voltage Discharging residual energies Protection of equipment from ground faults All of these Measuring of safety voltage Discharging residual energies Protection of equipment from ground faults ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary Through cooling coil None of these By the flux Through air Through cooling coil None of these By the flux Through air ANSWER EXPLANATION DOWNLOAD EXAMIANS APP function of transfomer is that transfer electrical energy from primary cicuit to secondary through magnetic cicuit by mutual induction
DGVCL Exam Paper (12-06-2016) As per Electricity Act, _____ means a person who has been granted a license to undertake trading in electricity under section 12. All of these Electricity supplier Electricity trader None of these All of these Electricity supplier Electricity trader None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Increasing the number of turns of wire on the secondary of a transformer will Increase the secondary current Decrease the secondary current Increase the primary current Have no effect on the secondary current Increase the secondary current Decrease the secondary current Increase the primary current Have no effect on the secondary current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP transformer ratio K : N₂/N₁=V₂/V₁=I₁/I₂
DGVCL Exam Paper (12-06-2016) As per Electricity Act, _____ means a process which simultaneously produces two or more forms of useful energy (including electricity). Cogeneration Power generation Captive Power Plant None of these Cogeneration Power generation Captive Power Plant None of these ANSWER DOWNLOAD EXAMIANS APP
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