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It is advised that staggering of the butt joints _________

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It is advised that staggering of the butt joints _________

(a) reduces reluctance of the path

(b) increases air gap

(c) increases mechanical strength

(d) all of the mentioned

The question was posed to me in my homework.

The doubt is from Transformer Construction topic in portion Transformers of Electrical Machines

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Right choice is (c) increases mechanical strength

The best explanation: Staggering is done for the steel butt joints of the transformer to gain more mechanical strength as the continuous air gap reduces the same.

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