DGVCL Exam Paper (12-06-2016) In a transmission line if booster transformers are to be used, preferred location will be Anywhere in the line At the sending end At the intermediate point At the receiving end Anywhere in the line At the sending end At the intermediate point At the receiving end ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The rating of transformer may be expressed in _____ kVA kVAR Horse power kW kVA kVAR Horse power kW ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Equipment : RatingTransformer : kVAAlternator : kVAMotor : kW/HPBattery : ampere-hour
DGVCL Exam Paper (12-06-2016) The main advantage of AC over DC is: All of these AC can be easily converted into DC by using a rectifier AC is easy to maintain & can be easily distributed at long distances Conversion flexibility from one voltage level to other All of these AC can be easily converted into DC by using a rectifier AC is easy to maintain & can be easily distributed at long distances Conversion flexibility from one voltage level to other ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The friction losses in Real Transformers are : 0.05 0.25 0 0.5 0.05 0.25 0 0.5 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP As there is no rotating part in transformer, there is no friction and windage loss
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: Current will be too much high Transformer may start to smoke and burn No effect Eddy Current and Hysteresis losses will be excessive Current will be too much high Transformer may start to smoke and burn No effect 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) As per Electricity Act, _____ means any line which is used for carrying electricity for any purpose. Electric line All of these Transmission line None of these Electric line All of these Transmission line None of these ANSWER DOWNLOAD EXAMIANS APP
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