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Transformers
A Buchholz relay can be installed on
Oil cooled transformer
Auto transformer
Air-cooled transformer
Welding transformer
Oil cooled transformer
Auto transformer
Air-cooled transformer
Welding transformer
Answer
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Related Question
Transformers
In an auto transformer, the primary and secondary are _____ coupled.
None of the listed here
Only magnetically
Only electrically
Magnetically as well as electrically
None of the listed here
Only magnetically
Only electrically
Magnetically as well as electrically
Answer
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Transformers
The all day efficiency of a transformer is also called its
Power efficiency
Current efficiency
None of the listed here
Energy efficiency
Power efficiency
Current efficiency
None of the listed here
Energy efficiency
Answer
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Transformers
In which of the following transformer part of primary winding also serves as the secondary winding?
Potential transformer
Step-up transformer
Auto transformer
Current transformer
Potential transformer
Step-up transformer
Auto transformer
Current transformer
Answer
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Transformers
If a transformer core has air gaps, then, _________
Eddy current is increased
Magnetising current is greatly increased
Hysteresis loss is decreased
Reluctance of magnetic path is decreased
Eddy current is increased
Magnetising current is greatly increased
Hysteresis loss is decreased
Reluctance of magnetic path is decreased
Answer
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Transformers
The path of the magnetic flux in transformer should have
high reluctance
low resistance
low reactance
high resistance
high reluctance
low resistance
low reactance
high resistance
Answer
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