DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary Through air None of these By the flux Through cooling coil Through air None of these By the flux Through cooling coil ANSWER EXPLANATION DOWNLOAD EXAMIANS APP function of transfomer is that transfer electrical energy from primary cicuit to secondary through magnetic cicuit by mutual induction
DGVCL Exam Paper (12-06-2016) Where is RAM located? Expansion Board All of above External Drive Mother Board Expansion Board All of above External Drive Mother Board ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The friction losses in Real Transformers are : 0 0.05 0.5 0.25 0 0.05 0.5 0.25 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) Which of the following circuit breakers has high reliability & minimum maintenance? Bulk oil type CB Sulphur hexafluoride CB Air blast CB Vacuum CB Bulk oil type CB Sulphur hexafluoride CB Air blast CB Vacuum CB ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Voltage All of these Current Frequency Voltage All of these Current Frequency 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) For a 66 kV line having span of 200 meters between towers the approximate sag will be 2 m. If the span is double the sag will be: 4 m 2 m 1 m 8 m 4 m 2 m 1 m 8 m ANSWER DOWNLOAD EXAMIANS APP
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