DGVCL Exam Paper (12-06-2016) A relay used for protection of motors against overload is : Impedance relay Thermal relay Buchholz's relay Electromagnetic attraction type Impedance relay Thermal relay Buchholz's relay Electromagnetic attraction type ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The UGVCL is operative in the _____ Gujarat. Central Western Southern Northern Central Western Southern Northern ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which unit holds data permanently? Primary Memory Unit Input unit Output Unit Secondary storage unit Primary Memory Unit Input unit Output Unit Secondary storage unit ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Transformer core is laminated to _____ Reduce all above losses Reduce hysteresis loss Reduce copper losses Reduce eddy current losses Reduce all above losses Reduce hysteresis loss Reduce copper losses Reduce eddy current losses ANSWER EXPLANATION DOWNLOAD EXAMIANS APP To reduce eddy current loss laminations is done.To reduce hysteresis loss good magnetic material (whose specific hysterisis loss is low) is used.
DGVCL Exam Paper (12-06-2016) Step-down transformer converts high voltage and low current into: High voltage and low current None of these Low voltage and high current How voltage and high current High voltage and low current None of these Low voltage and high current How voltage and high current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In step up votlage,Output votlage > Input votlageOutput current < Input currentIn step down transformerOutput votlage < Input votlageOutput current > Input current.Power and frequency remains almost constant in stepup or stepdown transformer.
DGVCL Exam Paper (12-06-2016) One kilowatt-hour is? 3.6 mega joules 1.6 mega joules None of these 2.6 mega joules 3.6 mega joules 1.6 mega joules None of these 2.6 mega joules ANSWER DOWNLOAD EXAMIANS APP
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