DGVCL Exam Paper (12-06-2016) One kilowatt-hour is? 3.6 mega joules None of these 2.6 mega joules 1.6 mega joules 3.6 mega joules None of these 2.6 mega joules 1.6 mega joules ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) Which of the following does not change in a transformer? Voltage All of these Frequency Current Voltage All of these Frequency Current 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) 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? 30 Volts 120 Volts 60 Volts 480 Volts 30 Volts 120 Volts 60 Volts 480 Volts ANSWER EXPLANATION DOWNLOAD EXAMIANS APP For transformer, V2/V1 = N2/N1V2/120 = 50/200V2 = 30 V
DGVCL Exam Paper (12-06-2016) The following is/are the characteristics of SF₆ circuit breakers: None of these All of these It does not need an auxiliary breaking chamber Short break time of 2 to 2.5 cycles None of these All of these It does not need an auxiliary breaking chamber Short break time of 2 to 2.5 cycles ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (12-06-2016) The energy radiated by Sun on a bright Sunny day is approximately: 2 kW/m² 800 W/m² 1 kW/m² 700 W/m² 2 kW/m² 800 W/m² 1 kW/m² 700 W/m² 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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