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Transformers
The efficiencies of transformers compared with that of electric motors of the same power are
much smaller
much higher
somewhat smaller
about the same
much smaller
much higher
somewhat smaller
about the same
Answer
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Related Question
Transformers
The noise produced by a transformer is termed as
hum
buzz
zoom
ringing
hum
buzz
zoom
ringing
Answer
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Transformers
The all day efficiency of a transformer is ______ the commercial efficiency.
More than
Less than
None of the listed here
The same as
More than
Less than
None of the listed here
The same as
Answer
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Transformers
Which winding of the transformer has less cross-sectional area?
Secondary winding
High voltage winding
Primary winding
Low voltage winding
Secondary winding
High voltage winding
Primary winding
Low voltage winding
Answer
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Transformers
If a power transformer is operated at very high frequencies, then ______
Core losses will be excessive
Primary reactance is too much increased
None of the listed here
Primary will draw large power
Core losses will be excessive
Primary reactance is too much increased
None of the listed here
Primary will draw large power
Answer
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Transformers
The short circuit test helps us to find
Cu loss at no load
Cu loss at any desire load
Iron loss at no load
None of the listed here
Cu loss at no load
Cu loss at any desire load
Iron loss at no load
None of the listed here
Answer
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