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 A transformer has maximum efficiency at 3/4 full load. The ratio of its iron losses and full load copper loss is : - 

a) 16/9 b) 4 / 3 c) 3/4 d) 9 /16

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 A transformer has maximum efficiency at 3/4 full load. The ratio of its iron losses and full load copper loss is : -  9 /16

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