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A step-down transformer drops the main supply voltage of 220 V to 10 V. The primary draws a current of 5 A and the current

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A step-down transformer drops the main supply voltage of 220 V to 10 V. The primary draws a current of 5 A and the current induced in the secondary is 100 A. Calculate the efficiency of the transformer.

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Vp = 220 V,Vs = 10V, ip = 5A,is = 100A. Now,

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