DGVCL Exam Paper (12-06-2016) You should choose Sleep option when When computer gets hanged frequently. Let it sleep for some time. You finish working and are going to bed. You are leaving for a very short time and want to resume your work shortly. The computer is tired after working for the whole day. When computer gets hanged frequently. Let it sleep for some time. You finish working and are going to bed. You are leaving for a very short time and want to resume your work shortly. The computer is tired after working for the whole day. ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) One kilowatt-hour is? None of these 2.6 mega joules 1.6 mega joules 3.6 mega joules None of these 2.6 mega joules 1.6 mega joules 3.6 mega joules ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? Transformer will operate with high efficiency No effect Transformer may start to smoke and burn Transformer will operate with low efficiency Transformer will operate with high efficiency No effect Transformer may start to smoke and burn 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) A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary? 120 Volts 60 Volts 480 Volts 30 Volts 120 Volts 60 Volts 480 Volts 30 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary By the flux Through cooling coil Through air None of these By the flux Through cooling coil Through air None of these 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) Which of the following circuit breakers has high reliability & minimum maintenance? Sulphur hexafluoride CB Vacuum CB Air blast CB Bulk oil type CB Sulphur hexafluoride CB Vacuum CB Air blast CB Bulk oil type CB ANSWER DOWNLOAD EXAMIANS APP
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