In transformer under the no load condition which loss negligible
Correct!
Wrong!
Open circuit test on transformer is used to find
Correct!
Wrong!
The phase difference between primary and secondary voltage of transformer is
Correct!
Wrong!
Tapping on transformer is usually provided on
Correct!
Wrong!
Transformer has maximum voltage regulation at
Correct!
Wrong!
The efficiency of power transformer is around
Correct!
Wrong!
Transformer core has
Correct!
Wrong!
At no load current taken by the transformer lags behind the applied voltage by
Correct!
Wrong!
When conducting short circuit test on transformer which side is short circuited
Correct!
Wrong!
Short circuit test on transformer is used to find
Correct!
Wrong!
It is advisable to use the auto transformer if the transformation ratio is
Correct!
Wrong!
Two transformers operating in parallel will share the load depending upon their
Correct!
Wrong!
Auto transformer is used in transmission and distribution when
Correct!
Wrong!
A transformer transforms
Correct!
Wrong!
Primary Winding of transformer
Correct!
Wrong!
A Common method for cooling a power transformer is
Correct!
Wrong!
A power transformer is a constant
Correct!
Wrong!
A transformer oil must free from
Correct!
Wrong!
In transformer the resistance between primary and secondary winding is
Correct!
Wrong!
Which of the following relay is used in transformer
Correct!
Wrong!
In transformer Buchholz relay give warning and protection against
Correct!
Wrong!
Tapping on transformer is usually provided for the
Correct!
Wrong!
In high frequency transformer which type of core is used
Correct!
Wrong!
Buchholz relay is generally not provided on transformers below
Correct!
Wrong!
The are rating of transformer is always expressed in
Correct!
Wrong!
Which of the following does not change in a transformer
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Wrong!
In a transformer the energy is conveyed from primary to secondary
Correct!
Wrong!
A transformer core is laminated to
Correct!
Wrong!
The degree of mechanical vibrations produced by the laminations of a transformer depends on
Correct!
Wrong!
The no-load current drawn by transformer is usually what per cent of the full-load current
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Wrong!
The path of a magnetic flux in a transformer should have
Correct!
Wrong!
No-load on a transformer is carried out to determine
Correct!
Wrong!
The dielectric strength of transformer oil is expected to be
Correct!
Wrong!
Sumper's test is conducted on trans-formers to determine
Correct!
Wrong!
The permissible flux density in case of cold rolled grain oriented steel is around
Correct!
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The efficiency of a transformer will be maximum when
Correct!
Wrong!
No-load current in a transformer
Correct!
Wrong!
The purpose of providing an iron core in a transformer is to
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Which of the following is not a part of transformer installation
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Wrong!
While conducting short-circuit test on a transformer the following side is short circuited
Correct!
Wrong!
Great article.
Your welcome
well prepared for test
Thank you
Dear i think transformer transform power & common method of cooling is oil cooling .