DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary Through air By the flux None of these Through cooling coil Through air By the flux None of these Through cooling coil 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) Increasing the number of turns of wire on the secondary of a transformer will Increase the primary current Increase the secondary current Decrease the secondary current Have no effect on the secondary current Increase the primary current Increase the secondary current Decrease the secondary current Have no effect on the secondary current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP transformer ratio K : N₂/N₁=V₂/V₁=I₁/I₂
DGVCL Exam Paper (12-06-2016) Transformer has _____ Auxiliary winding and secondary winding None of these Primary winding and secondary winding Primary winding and Auxiliary winding Auxiliary winding and secondary winding None of these Primary winding and secondary winding Primary winding and Auxiliary winding ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) As per Electricity Act, _____ means a process which simultaneously produces two or more forms of useful energy (including electricity). Captive Power Plant None of these Power generation Cogeneration Captive Power Plant None of these Power generation Cogeneration 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: 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 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 following is correct : All of these P = V²/R P = I²xR P = VxI All of these P = V²/R P = I²xR P = VxI ANSWER EXPLANATION DOWNLOAD EXAMIANS APP True for DC Circuits.For single pahse ac P = V I CosØ
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