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Three units of single phase transformers and one single three-phase transformer rating ___________

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Three units of single phase transformers and one single three-phase transformer rating ___________

(a) will be same for one rating

(b) can never be made same

(c) may be same

(d) none of the mentioned

The question was posed to me in my homework.

My query is from Three Phase Transformers in chapter Transformers of Electrical Machines

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Correct choice is (a) will be same for one rating

The explanation: Three single phase transformers and one single unit of three phase transformer will be same only. this is done to reduce the cost and spacing.

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