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 may start to smoke and burn Transformer will operate with low efficiency No effect Transformer will operate with high efficiency 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) The acting contacts for a circuit breakers are made of : Stainless Steel Hard-pressed carbon Copper Tungsten alloy Porcelain Stainless Steel Hard-pressed carbon Copper Tungsten alloy Porcelain ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The number of cycles in which a high speed circuit breaker can complete its operation is 10 to 18 3 to 8 20 to 30 40 to 50 10 to 18 3 to 8 20 to 30 40 to 50 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which unit holds data permanently? Output Unit Secondary storage unit Primary Memory Unit Input unit Output Unit Secondary storage unit Primary Memory Unit Input unit ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) In a transmission line if booster transformers are to be used, preferred location will be At the sending end At the intermediate point At the receiving end Anywhere in the line At the sending end At the intermediate point At the receiving end Anywhere in the line ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The problematic pollutants in emission of coal based generating plants _____ NOx SO₂ CO All of these NOx SO₂ CO All of these ANSWER DOWNLOAD EXAMIANS APP
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