DGVCL Exam Paper (12-06-2016) Which of the following circuit breakers has high reliability & minimum maintenance? Air blast CB Vacuum CB Sulphur hexafluoride CB Bulk oil type CB Air blast CB Vacuum CB Sulphur hexafluoride CB Bulk oil type CB ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) For 11 kV line the capacitance per km per phase will be of the order of: 0.01 microF 0.1 Farad 0.01 Farad 1 Farad 0.01 microF 0.1 Farad 0.01 Farad 1 Farad 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: 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 Transformer may start to smoke and burn No effect 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 energy radiated by Sun on a bright Sunny day is approximately: 700 W/m² 1 kW/m² 800 W/m² 2 kW/m² 700 W/m² 1 kW/m² 800 W/m² 2 kW/m² ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) As per Electricity Act, _____ means any line which is used for carrying electricity for any purpose. None of these Electric line Transmission line All of these None of these Electric line Transmission line All of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) In case the height of transmission tower is increased, which of the following parameter is likely to change? Inductance Resistance Capacitance None of these Inductance Resistance Capacitance None of these ANSWER DOWNLOAD EXAMIANS APP
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