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Answer :

The magnetising current of a transformer is usually small because it has small air gap.

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Description : The secondary of a current transformer is always short-circuited under operating conditions because it?

Answer : The secondary of a current transformer is always short-circuited under operating conditions because it avoids core saturation and high voltage induction.

Description : 40 No load test on a transformer is carried out to find A. Copper loss B. magnetising current C. Magnetising current and loss D. Efficiency of the transformer

Answer : C. Magnetising current and loss

Description : 22 No load test on a transformer is carried out to find A. copper loss B. magnetising current C. Magnetising current and no load loss D. Efficiency of the transformer

Answer : C. Magnetising current and no load loss

Answer : No-load current of a transformer has small magnitude and low power factor.

Answer : The transformer ratings are usually expressed in terms of kVA.