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? 60 Volts 120 Volts 480 Volts 30 Volts 60 Volts 120 Volts 480 Volts 30 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Frequency Voltage Current All of these Frequency Voltage Current All of these ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In transformer voltage and current can be raised or lowered.Frequency remains samePower and Flux remains almost constant.
DGVCL Exam Paper (12-06-2016) The core construction is like spokes of a wheel in following transformer: Core Type Transformer None of these Berry Type Transformer Shell Type Transformer Core Type Transformer None of these Berry Type Transformer Shell Type Transformer ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) kWh meter is the electric meter that measures the amount of electrical _____ in kWh that was consumed in the house. Current None of these Energy Voltage Current None of these Energy Voltage ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The friction losses in Real Transformers are : 0.5 0 0.05 0.25 0.5 0 0.05 0.25 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) The Minimum Oil Circuit Breaker (MOCB) is named because of : None of these Reduced requirement of air All of these Reduced requirement of oil None of these Reduced requirement of air All of these Reduced requirement of oil ANSWER DOWNLOAD EXAMIANS APP
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