DGVCL Exam Paper (12-06-2016) Which of the following circuit breakers has high reliability & minimum maintenance? Bulk oil type CB Vacuum CB Air blast CB Sulphur hexafluoride CB Bulk oil type CB Vacuum CB Air blast CB Sulphur hexafluoride CB ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The time of closing the cycle, in modern circuit breakers is 0.1 sec. 0.001 sec. 0.003 sec. 0.01 sec. 0.1 sec. 0.001 sec. 0.003 sec. 0.01 sec. ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) For cost & safety, the outdoor substations are installed for voltages above: 11 kV 110 kV 60 kV 33 kV 11 kV 110 kV 60 kV 33 kV 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 Eddy Current and Hysteresis losses will be excessive No effect Current will be too much high Transformer may start to smoke and burn Eddy Current and Hysteresis losses will be excessive No effect Current will be too much high 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) Reactance relay is used for protection against: Earth fault Over voltage fault None of these Phase fault Earth fault Over voltage fault None of these Phase fault ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following are components of Central Processing Unit (CPU)? Arithmetic logic unit, Control unit Control Unit, Monitor Arithmetic logic unit, Mouse Arithmetic logic unit, Integrated Circuits Arithmetic logic unit, Control unit Control Unit, Monitor Arithmetic logic unit, Mouse Arithmetic logic unit, Integrated Circuits ANSWER DOWNLOAD EXAMIANS APP
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