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 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 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 formula is correct: Diversity factor = 1 x Coincidence Factor Diversity factor = 1 - Coincidence Factor All of these Diversity factor = 1/Coincidence Factor Diversity factor = 1 x Coincidence Factor Diversity factor = 1 - Coincidence Factor All of these Diversity factor = 1/Coincidence Factor ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The SI unit of energy is : Coulomb Newton Henry Joule Coulomb Newton Henry Joule ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A 100-watt light bulb turned on for 8 hours uses : 800 Wh None of these 8 kWh 0.8 kWh 800 Wh None of these 8 kWh 0.8 kWh ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In Solution 0.8 kWh and 800 Wh both options are given as answer as both are correct
DGVCL Exam Paper (12-06-2016) Reactance relay is used for protection against: Phase fault Over voltage fault None of these Earth fault Phase fault Over voltage fault None of these Earth fault ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) In case the height of transmission tower is increased, which of the following parameter is likely to change? Capacitance Inductance None of these Resistance Capacitance Inductance None of these Resistance ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS