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Transformers

Transformers
Natural oil cooling is used for transformers upto a rating of

1000 kVA
500 kVA
250 kVA
3000 kVA

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Transformers
By laminating the core of a transformer, we decrease _____

Copper loss
Hysteresis loss
Leakage reactance
Eddy current loss

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Transformers
A no-load test is performed on a transformer to determine

efficiency
magnetising current
copper loss
magnetising current and loss
core loss

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Transformers
Which of the following is not a part of transformer installation?

Buchholz relay
Exciter
Conservator
Breather

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Transformers
The primary coil of a transformer is connected to a 60 V ac source. The secondary coil is connected to a 330 load. The turns ratio is 3:1. What is the secondary voltage?

20 V
2 V
18 V
180 V

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Transformers
A transformer has 200 W as iron loss at full load. The iron loss at full load. The iron loss at half full load will be

200 W
50 W
100 W
400 W

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MORE MCQ ON Transformers

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