DGVCL Exam Paper (12-06-2016) Core type transformers are popular in _____ All of these High voltage applications Low voltage applications None of these All of these High voltage applications Low voltage applications None of these 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 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 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) Which of the following 3-phase connection of a transformer causes interference with the neighbouring communication lines: Delta-Delta Star-Delta Star-Star Delta-Star Delta-Delta Star-Delta Star-Star Delta-Star ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The voltage of transmission can be regulated by Use of capacitors to neutralize the effect of series reactance Any of the above methods Use of tap changing transformers Switching in shunt capacitors at the receiving end during heavy loads Use of capacitors to neutralize the effect of series reactance Any of the above methods Use of tap changing transformers Switching in shunt capacitors at the receiving end during heavy loads ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The main objectives in framing tariff are: Tariffs can be modified from time to time The tariff must be equitable amongst different consumers All of these The consumers must readily understand the tariffs Tariffs can be modified from time to time The tariff must be equitable amongst different consumers All of these The consumers must readily understand the tariffs ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Directional relays are based on flow of Current All of these Voltage Power Current All of these Voltage Power ANSWER DOWNLOAD EXAMIANS APP
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