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Transformers

Transformers
Which of the following is not a fitting on a transformer?

Conservator
Breather
Buchholz's relay
Commutator

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Transformers
The path of the magnetic flux in transformer should have

high reluctance
high resistance
low resistance
low reactance

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Transformers
The voltage transformation ratio of a transformer is equal to the ratio of

primary turns to secondary turns
secondary terminal voltage to primary applied voltage
secondary induced e.m.f. to primary induced e.m.f.
secondary current to primary current

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Transformers
The principle of working of transformer is

Static induction
Mutual induction
Dynamic induction
Self induction

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Transformers
No-load on a transformer is carried out to determine

magnetising current and loss
efficiency of the transformer
copper loss
magnetising current

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Transformers
Which of the following transformer is smallest?

2kVA, 200 Hz
2kVA, 50 Hz
2kVA, 500 Hz
2kVA, 400 Hz

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