DGVCL Exam Paper (12-06-2016) A _____ is used to measure the stator % winding temperature of the generator. Thermometer Thermocouple Pyrometer Resistance thermometer Thermometer Thermocouple Pyrometer Resistance thermometer ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Earthing switch is used for? All of these Measuring of safety voltage Protection of equipment from ground faults Discharging residual energies All of these Measuring of safety voltage Protection of equipment from ground faults Discharging residual energies ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Frequency All of these Voltage Current Frequency All of these Voltage Current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In transformer voltage and current can be raised or lowered.Frequency remains samePower and Flux remains almost constant.
DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? 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 No effect 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) A relay used for protection of motors against overload is : Thermal relay Buchholz's relay Electromagnetic attraction type Impedance relay Thermal relay Buchholz's relay Electromagnetic attraction type Impedance relay ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The Minimum Oil Circuit Breaker (MOCB) is named because of : Reduced requirement of air None of these All of these Reduced requirement of oil Reduced requirement of air None of these All of these Reduced requirement of oil ANSWER DOWNLOAD EXAMIANS APP
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