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 Short break time of 2 to 2.5 cycles All of these None of these It does not need an auxiliary breaking chamber Short break time of 2 to 2.5 cycles All of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) _____ electric power is the most common method used by electrical grids to transfer power None of these Two-phase One-phase Three-phase None of these Two-phase One-phase Three-phase ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) In India _____ supply is 415 V supply through 4-wires. None of these Three - phase Single - phase Two-phase None of these Three - phase Single - phase Two-phase 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 low efficiency Transformer may start to smoke and burn Transformer will operate with high efficiency No effect Transformer will operate with low efficiency Transformer may start to smoke and burn Transformer will operate with high efficiency No effect 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) The following is correct : P = VxI P = V²/R All of these P = I²xR P = VxI P = V²/R All of these P = I²xR ANSWER EXPLANATION DOWNLOAD EXAMIANS APP True for DC Circuits.For single pahse ac P = V I CosØ
DGVCL Exam Paper (12-06-2016) The Electricity Act is an Act of _____of India enacted to transform the power sector in India. The Parliament A State resolution None of these All of these The Parliament A State resolution None of these All of these ANSWER DOWNLOAD EXAMIANS APP
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