DGVCL Exam Paper (12-06-2016) _____ electric power is the most common method used by electrical grids to transfer power Three-phase Two-phase One-phase None of these Three-phase Two-phase One-phase None of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) If the displayed system time and date is wrong, you can reset it using : Control panel Menu bar Task bar Desk top Control panel Menu bar Task bar Desk top ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following is the least expensive protection for over current in low voltage system? Air break circuit breaker Oil Circuit breaker Rewireable fuse Isolator Air break circuit breaker Oil Circuit breaker Rewireable fuse Isolator ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A Transformer _____ Changes AC to DC Changes DC to AC Steps up or down DC Voltages & Current Steps up or down AC Voltages & Current Changes AC to DC Changes DC to AC Steps up or down DC Voltages & Current Steps up or down AC Voltages & Current 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 Transformer may start to smoke and burn Current will be too much high Eddy Current and Hysteresis losses will be excessive No effect Transformer may start to smoke and burn 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) In India _____ supply is 415 V supply through 4-wires. None of these Two-phase Single - phase Three - phase None of these Two-phase Single - phase Three - phase ANSWER DOWNLOAD EXAMIANS APP
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