DGVCL Exam Paper (12-06-2016) A Transformer _____ Steps up or down DC Voltages & Current Changes AC to DC Changes DC to AC Steps up or down AC Voltages & Current Steps up or down DC Voltages & Current Changes AC to DC Changes DC to AC Steps up or down AC Voltages & Current ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce eddy current losses Reduce hysteresis loss Reduce copper losses Reduce all above losses Reduce eddy current losses Reduce hysteresis loss Reduce copper losses Reduce all above losses ANSWER EXPLANATION DOWNLOAD EXAMIANS APP To reduce eddy current loss laminations is done.To reduce hysteresis loss good magnetic material (whose specific hysterisis loss is low) is used.
DGVCL Exam Paper (12-06-2016) The Electricity Act is applicable in _____ All the states of India In Gujarat only All parts of India All parts of India except state of Jammu and Kashmir All the states of India In Gujarat only All parts of India All parts of India except state of Jammu and Kashmir ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The transformer works on the principle of: All of these Mutual capacitance None of these Mutual induction All of these Mutual capacitance None of these Mutual induction ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Transformer is static device.two or more stationary electrical circuit mutually linked by magnetic circuit.assumptions of ideal transformer:1. there are no losses.2. whole magnetic flux constant no leakage.3. permeability of core is infinite.
DGVCL Exam Paper (12-06-2016) The time of closing the cycle, in modern circuit breakers is 0.001 sec. 0.01 sec. 0.003 sec. 0.1 sec. 0.001 sec. 0.01 sec. 0.003 sec. 0.1 sec. ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer has _____ None of these Primary winding and secondary winding Auxiliary winding and secondary winding Primary winding and Auxiliary winding None of these Primary winding and secondary winding Auxiliary winding and secondary winding Primary winding and Auxiliary winding ANSWER DOWNLOAD EXAMIANS APP
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