DGVCL Exam Paper (12-06-2016) Step-down transformer converts high voltage and low current into: Low voltage and high current High voltage and low current How voltage and high current None of these Low voltage and high current High voltage and low current How voltage and high current None of these 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) The number of cycles in which a high speed circuit breaker can complete its operation is 10 to 18 3 to 8 20 to 30 40 to 50 10 to 18 3 to 8 20 to 30 40 to 50 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) True value has been 50 whereas measured value is 40 then the percentage error in the reading will be _____ 0.2 0.3 0.5 0.4 0.2 0.3 0.5 0.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP %error = 100 * (actual - measured )/ actual
DGVCL Exam Paper (12-06-2016) The energy radiated by Sun on a bright Sunny day is approximately: 2 kW/m² 1 kW/m² 800 W/m² 700 W/m² 2 kW/m² 1 kW/m² 800 W/m² 700 W/m² 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 : 75 kVA 20 kVA None of these 34.64 kVA 75 kVA 20 kVA None of these 34.64 kVA ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For three phase,VA = √3 V IFor single phase, kVA = V I
DGVCL Exam Paper (12-06-2016) The main disadvantages of having poor power factors are: Poor voltage regulation High cost of station and distribution equipment High energy loss in conductor All of these Poor voltage regulation High cost of station and distribution equipment High energy loss in conductor All of these ANSWER DOWNLOAD EXAMIANS APP
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