DGVCL Exam Paper (12-06-2016) What will happen if the primary of a transformer is connected to DC supply? 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 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 friction losses in Real Transformers are : 0 0.25 0.5 0.05 0 0.25 0.5 0.05 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP As there is no rotating part in transformer, there is no friction and windage loss
DGVCL Exam Paper (12-06-2016) In fuel cell the _____ energy is converted into electrical energy. Mechanical Heat Chemical Sound Mechanical Heat Chemical Sound ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A _____ is used to measure the stator % winding temperature of the generator. Thermometer Pyrometer Thermocouple Resistance thermometer Thermometer Pyrometer Thermocouple Resistance thermometer ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) kWh meter is the electric meter that measures the amount of electrical _____ in kWh that was consumed in the house. Energy Voltage Current None of these Energy Voltage Current None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which unit holds data permanently? Input unit Output Unit Primary Memory Unit Secondary storage unit Input unit Output Unit Primary Memory Unit Secondary storage unit ANSWER DOWNLOAD EXAMIANS APP
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