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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
The mutual inductance between two unity coupled coils of 9 H and 4 H is

36 H
2.2 H
6 H
13 H

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DGVCL Exam Paper (11-12-2011)
If the dielectric strength of the medium between the contacts builds up more rapidly than the restriking voltage the arc will

Extinguish
Restrike
Increase in size
Decrease in size

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DGVCL Exam Paper (11-12-2011)
The main criterion for the design of a distributor is

Voltage drop
Radio interference
Corona loss
Temperature rise

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

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

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DGVCL Exam Paper (11-12-2011)
The form factor in AC means the ration of

Peak value to average value
Peak value to r.m.s value
R.M.S. value to average value
R.M.S. value to peak value

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DGVCL Exam Paper (11-12-2011)
All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work?

Positive cycle of sine wave
AC
Negative cycle of sine wave
DC

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