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GETCO Exam Paper (30-11-2008)

GETCO Exam Paper (30-11-2008)
An air blast C.B. is usually employed for _____ duty

repeated
intermittent
short
instantaneous

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GETCO Exam Paper (30-11-2008)
Transmission efficiency increases as

voltage increases but power factor decreases
voltage and power factor both decrease
voltage decreases but power factor increases
voltage and power factor both increase

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GETCO Exam Paper (30-11-2008)
In a dry type transformer, accumulation of dust on the windings and core is likely to cause

short circuiting of primary winding
reduction in heat dissipation
short circuiting of secondary winding
corrosion of core material

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GETCO Exam Paper (30-11-2008)
An AC transmission line requires a VAR input:

to reduce losses
to improve stability
to improve the regulation
to increase power transmission

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GETCO Exam Paper (30-11-2008)
In the protection scheme relay functions as _____ device

switching
sensing
breaking
none of these

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GETCO Exam Paper (30-11-2008)
Select the most suitable word from the given choices to fill in the blanks to make the sentence meaningfully complete

You have _____ trouble to all of us.

done
produced
caused
resulted

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