DGVCL Exam Paper (12-06-2016) Step-down transformer converts high voltage and low current into: How voltage and high current Low voltage and high current High voltage and low current None of these How voltage and high current Low voltage and high current High voltage and low 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) In fuel cell the _____ energy is converted into electrical energy. Chemical Sound Mechanical Heat Chemical Sound Mechanical Heat ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) A certain transformer has 200 turns in the primary winding, 50 turns in the secondary winding and 120 volts applied to the primary. What is the voltage across the secondary? 480 Volts 120 Volts 30 Volts 60 Volts 480 Volts 120 Volts 30 Volts 60 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) In a transformer the energy is conveyed from primary to secondary Through cooling coil None of these By the flux Through air Through cooling coil None of these By the flux Through air ANSWER EXPLANATION DOWNLOAD EXAMIANS APP function of transfomer is that transfer electrical energy from primary cicuit to secondary through magnetic cicuit by mutual induction
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 0.5 0.3 0.4 0.2 0.5 0.3 0.4 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP %error = 100 * (actual - measured )/ actual
DGVCL Exam Paper (12-06-2016) About how many times longer would a 10 watt light bulb be able to burn compared to a 100 watt bulb with the same energy? 100 times longer 10 times longer Same time None of these 100 times longer 10 times longer Same time None of these ANSWER DOWNLOAD EXAMIANS APP
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