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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
The picture on the monitor of a computer is made up of tiny coloured dots called

Points
Pixels
Spots
Icons

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DGVCL Exam Paper (11-12-2011)
If a relay fails to operate inspite of a fault in its own zone of protection, it is said to

Over reach
Under reach
Pick up
Reach

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DGVCL Exam Paper (11-12-2011)
The purpose of providing a choke in a tube light is

To avoid radio interference
To improve the power factor
To eliminate corona effect
To limit the current to an appropriate value

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DGVCL Exam Paper (11-12-2011)
An over excited synchronous motor draws current at

Unity power factor
Depends on nature of load
Lagging power factor
Leading power factor

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Over excitation : leading current
Under excitation : lagging current
Normal excitation : current with unity PF (in phase current)

DGVCL Exam Paper (11-12-2011)
In a series RLC circuit at resonance

Current is maximum and power factor is 0.5
Current is minimum and power factor is 0.5
Current is maximum and power factor is unity
Current is minimum and power factor is unity

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DGVCL Exam Paper (11-12-2011)
Which of the following power distribution system gives better reliabity ?

Ring main system
None of these
Radial system
DC 3 wire system

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MORE MCQ ON DGVCL Exam Paper (11-12-2011)

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