DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary Through air Through cooling coil None of these By the flux Through air Through cooling coil None of these By the flux 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) _____ electric power is the most common method used by electrical grids to transfer power Two-phase One-phase Three-phase None of these Two-phase One-phase Three-phase None of these ANSWER DOWNLOAD EXAMIANS APP
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: 2 m 8 m 4 m 1 m 2 m 8 m 4 m 1 m ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Voltage Frequency Current All of these Voltage Frequency Current All of these 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) A Transformer _____ Changes DC to AC Steps up or down AC Voltages & Current Changes AC to DC Steps up or down DC Voltages & Current Changes DC to AC Steps up or down AC Voltages & Current Changes AC to DC Steps up or down DC Voltages & Current ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Induction cup relay is operated due to changes in : All of these Voltage Current Impedance All of these Voltage Current Impedance ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS