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Transformers
Which of the following is not a fitting on a transformer?
Commutator
Conservator
Breather
Buchholz's relay
Commutator
Conservator
Breather
Buchholz's relay
Answer
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Related Question
Transformers
An isolation transformer has primary to secondady turns ratio of
2:1
Can be any ratio
1:1
1:2
2:1
Can be any ratio
1:1
1:2
Answer
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Transformers
Natural air cooling is generally restricted for transformers up to
5 MVA
15 MVA
50 MVA
1.5 MVA
5 MVA
15 MVA
50 MVA
1.5 MVA
Answer
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Transformers
A certain transformer has a turns ratio of 1 and a 0.85 coefficient of coupling. When 2 V ac is applied to the primary, the secondary voltage is
1.7 V
0 V
1 V
0.85 V
1.7 V
0 V
1 V
0.85 V
Answer
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Transformers
Short circuit test on transformers is conducted to determine
hysteresis losses
copper losses
eddy current losses
core losses
hysteresis losses
copper losses
eddy current losses
core losses
Answer
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Transformers
The secondary of a current transformer is always short-circuited under operating conditions because it
is safe to human beings
protects the primary circuit
avoids core saturation and high voltage induction
None of these
is safe to human beings
protects the primary circuit
avoids core saturation and high voltage induction
None of these
Answer
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