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MHT CET 2019 (3 May, Shift 1) · AC Generator & Transformer

AC Generator & Transformer question from MHT CET 2019 (3 May, Shift 1)

Q46MHT CET 2019 · 3 MAY · SHIFT 1Easy

AC Generator & Transformer

A 220 V input is supplied to a transformer. The output circuit draws a current of 2.0 A at 440 V. If the ratio of output to input power is 0.8, then the current drawn by primary winding is

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Answer: (b)

$P_{out} = 440 \times 2 = 880\text{ W}$
$P_{in} = \dfrac{880}{0.8} = 1100\text{ W}$
$I_p = \dfrac{1100}{220} = 5.0\text{ A}$
So the answer is (b) 5.0 A.

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