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Transformers

Transformers
Noise level test in a transformer is a

None of these
routine test
special test
type test

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Transformers
The efficiencies of transformers compared with that of electric motors of the same power are

about the same
much smaller
somewhat smaller
much higher

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Transformers
Auto-transformer makes effective saving on copper and copper losses, when its transformation ratio is

approximately equal to one
less than one
None of these
great than one

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Transformers
For the parallel operation of single phase transformers it is necessary that they should have

same polarity
same efficiency
same number of turns on the secondary side.
same kVA rating

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Transformers
In a transformer the resistance between its primary and secondary is

1000 ohms
Infinite
Zero
1 ohm

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Transformers
Which winding of the transformer has less cross-sectional area?

Secondary winding
Primary winding
High voltage winding
Low voltage winding

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MORE MCQ ON Transformers

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