DGVCL Exam Paper (12-06-2016) The acting contacts for a circuit breakers are made of : Copper Tungsten alloy Stainless Steel Hard-pressed carbon Porcelain Copper Tungsten alloy Stainless Steel Hard-pressed carbon Porcelain ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The kVA rating of Three-phase transformer with Voltage = 200 V and Current = 100 A will be : 34.64 kVA 75 kVA 20 kVA None of these 34.64 kVA 75 kVA 20 kVA None of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For three phase,VA = √3 V IFor single phase, kVA = V I
DGVCL Exam Paper (12-06-2016) Directional relays are based on flow of Power Current Voltage All of these Power Current Voltage All of these ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Step-down transformer converts high voltage and low current into: Low voltage and high current How voltage and high current None of these High voltage and low current Low voltage and high current How voltage and high current None of these High voltage and low 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) A fuse wire should have : High specific resistance and high melting point Low specific resistance and low melting point High specific resistance and low melting point Low specific resistance and high melting point High specific resistance and high melting point Low specific resistance and low melting point High specific resistance and low melting point Low specific resistance and high melting point ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The main disadvantages of having poor power factors are: High cost of station and distribution equipment Poor voltage regulation High energy loss in conductor All of these High cost of station and distribution equipment Poor voltage regulation High energy loss in conductor All of these ANSWER DOWNLOAD EXAMIANS APP
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