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DGVCL Exam Paper (12-06-2016)

DGVCL Exam Paper (12-06-2016)
Admittance relay is _____ relay.

Non-directional
Directional
None of these
Impedance

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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
60 Volts
30 Volts

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

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
None of these
100 times longer
Same time

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DGVCL Exam Paper (12-06-2016)
The main advantage of AC over DC is:

All of these
Conversion flexibility from one voltage level to other
AC is easy to maintain & can be easily distributed at long distances
AC can be easily converted into DC by using a rectifier

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DGVCL Exam Paper (12-06-2016)
A relay used for protection of motors against overload is :

Electromagnetic attraction type
Impedance relay
Thermal relay
Buchholz's relay

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DGVCL Exam Paper (12-06-2016)
In India _____ supply is 415 V supply through 4-wires.

None of these
Three - phase
Single - phase
Two-phase

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

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