DGVCL Exam Paper (12-06-2016) Transformer has _____ Primary winding and Auxiliary winding 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 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The problematic pollutants in emission of coal based generating plants _____ CO SO₂ All of these NOx CO SO₂ All of these NOx ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: Transformer may start to smoke and burn No effect Current will be too much high Eddy Current and Hysteresis losses will be excessive Transformer may start to smoke and burn No effect Current will be too much high Eddy Current and Hysteresis losses will be excessive ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Core loss of transformer = Hysteresis loss + eddy current lossHysteresis loss prpotional to feddy current loss prpotional to f².
DGVCL Exam Paper (12-06-2016) The kVA rating of Three-phase transformer with Voltage = 200 V and Current = 100 A will be : 34.64 kVA None of these 75 kVA 20 kVA 34.64 kVA None of these 75 kVA 20 kVA ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For three phase,VA = √3 V IFor single phase, kVA = V I
DGVCL Exam Paper (12-06-2016) One kilowatt-hour is? None of these 3.6 mega joules 1.6 mega joules 2.6 mega joules None of these 3.6 mega joules 1.6 mega joules 2.6 mega joules ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following 3-phase connection of a transformer causes interference with the neighbouring communication lines: Delta-Delta Star-Delta Delta-Star Star-Star Delta-Delta Star-Delta Delta-Star Star-Star ANSWER DOWNLOAD EXAMIANS APP
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