DGVCL Exam Paper (12-06-2016) The problematic pollutants in emission of coal based generating plants _____ All of these SO₂ CO NOx All of these SO₂ CO NOx ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer has _____ Primary winding and Auxiliary winding None of these Auxiliary winding and secondary winding Primary winding and secondary winding Primary winding and Auxiliary winding None of these Auxiliary winding and secondary winding Primary winding and secondary winding ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Frequency Voltage All of these Current Frequency Voltage All of these 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) The kVA rating of Three-phase transformer with Voltage = 200 V and Current = 100 A will be : 20 kVA 75 kVA 34.64 kVA None of these 20 kVA 75 kVA 34.64 kVA None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For three phase,VA = √3 V IFor single phase, kVA = V I
DGVCL Exam Paper (12-06-2016) Core type transformers are popular in _____ All of these Low voltage applications None of these High voltage applications All of these Low voltage applications None of these High voltage applications ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce copper losses Reduce hysteresis loss Reduce all above losses Reduce eddy current losses Reduce copper losses Reduce hysteresis loss Reduce all above losses Reduce eddy current 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.
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