DGVCL Exam Paper (12-06-2016) The number of cycles in which a high speed circuit breaker can complete its operation is 40 to 50 20 to 30 10 to 18 3 to 8 40 to 50 20 to 30 10 to 18 3 to 8 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The following formula is correct: All of these Load facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period + Peak load for the same period Load factor = Average load for a period x Peak load for the same period All of these Load facto r= Average load for a period/Peak load for the same period Load factor = Average load for a period + Peak load for the same period Load factor = Average load for a period x Peak load for the same period ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Frequency All of these Voltage Current Frequency All of these Voltage 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) Efficiency of a power transformer is of the order of : 0.5 0.98 1 0.25 0.5 0.98 1 0.25 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: 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 Transformer may start to smoke and burn 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 consumer of electricity could be: All of these Agricultural Industrial and Commercial Domestic All of these Agricultural Industrial and Commercial Domestic ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS