DGVCL Exam Paper (12-06-2016) _____ are used where it is necessary to control a circuit by a low power signal. Transformer Relays Electric Motor None of these Transformer Relays Electric Motor None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary? 120 Volts 60 Volts 30 Volts 480 Volts 120 Volts 60 Volts 30 Volts 480 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) The load of a consumer is generally measured in terms of : Ampere hour Volts Amperes kW Ampere hour Volts Amperes kW ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce eddy current losses Reduce copper losses Reduce hysteresis loss Reduce all above losses Reduce eddy current losses Reduce copper losses Reduce hysteresis loss 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) Efficiency of a power transformer is of the order of : 0.5 0.98 0.25 1 0.5 0.98 0.25 1 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A 17 inch personal computer uses approximately 150 watts in an hour. If you have same computer on for only 4 minutes (for checking e-mail) what would be the power consumption? None of these 0.01 kW 0.1 kW 0.04 kW None of these 0.01 kW 0.1 kW 0.04 kW ANSWER DOWNLOAD EXAMIANS APP
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