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DGVCL Exam Paper (12-06-2016)

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?

10 times longer
Same time
100 times longer
None of these

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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

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For transformer, V2/V1 = N2/N1
V2/120 = 50/200
V2 = 30 V

DGVCL Exam Paper (12-06-2016)
In a transformer the energy is conveyed from primary to secondary

None of these
Through cooling coil
Through air
By the flux

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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)
For cost & safety, the outdoor substations are installed for voltages above:

60 kV
110 kV
33 kV
11 kV

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DGVCL Exam Paper (12-06-2016)
The rating of fuse wire is always expressed in _____

Ampere-volts
Amperes
kWh
Ampere-hours

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Equipment :
Rating Fuse : Ampere
Transformer : kVA
Alternator : kVA
Motor : kW/HP
Battery : ampere-hour

DGVCL Exam Paper (12-06-2016)
The following is/are the characteristics of SF₆ circuit breakers:

None of these
All of these
Short break time of 2 to 2.5 cycles
It does not need an auxiliary breaking chamber

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MORE MCQ ON DGVCL Exam Paper (12-06-2016)

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