A step up transformer operates on 220 V and supplies current of 2 A. The ratio of primary and secondary windings is 1: 20. The current in the primary is (a) 5 A (b) 2 A (c) 40 A (d) 20 A

Answer: (c). (Ip)/(Is) = (Ns)/(Np) = 20 Ip = 20 × 2 So the answer is (c) 40 A.

A step up transformer operates on 220 V and supplies current of 2 A… | MHT CET 2021 (24 Sep, Shift 1)

Q37MHT CET 2021 · 24 SEP · SHIFT 1Easy

AC Generator & Transformer

A step up transformer operates on $220\text{ V}$ and supplies current of $2\text{ A}$ . The ratio of primary and secondary windings is $1 : 20$ . The current in the primary is

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Answer: (c)

$\frac{I_p}{I_s} = \frac{N_s}{N_p} = 20$
$I_p = 20 \times 2$
So the answer is (c) $40\text{ A}$ .

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