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Transformers
Which of the following parts of a transformer is visible from outside?
Bushings
Secondary winding
Core
Primary winding
Bushings
Secondary winding
Core
Primary winding
Answer
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Related Question
Transformers
The hum in a transformer is mainly attributed to
mechanical vibrations
magnetostriction
oil in the transformer
load changes
mechanical vibrations
magnetostriction
oil in the transformer
load changes
Answer
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Transformers
Leakage flux in a transformer occurs because
Air is not a good magnetic insulator
Iron core has high permeability
Applied voltage is sinusoidal
Transformer is not an efficient device
Air is not a good magnetic insulator
Iron core has high permeability
Applied voltage is sinusoidal
Transformer is not an efficient device
Answer
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Transformers
Which of the following transformer should never have the secondary open circuited while the primary is energised?
Current transformer
Potential transformer
Auto transformer
Power transformer
Current transformer
Potential transformer
Auto transformer
Power transformer
Answer
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Transformers
The primary leakage flux links _____
Both primary and secondary windings
Primary winding only
Secondary winding only
None of the listed here
Both primary and secondary windings
Primary winding only
Secondary winding only
None of the listed here
Answer
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Transformers
Which of the following 3 phase connections of transformer create disturbances in communication systems
Star/Star
Delta/Star
Star/Delta
Delta/Delta
Star/Star
Delta/Star
Star/Delta
Delta/Delta
Answer
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