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NEET 1998 (AIPMT) · AC Generator & Transformer

AC Generator & Transformer question from NEET 1998 (AIPMT)

Q59NEET 1998 · AIPMTEasy

AC Generator & Transformer

A step-up transformer operates on a $230\text{ V}$ line and supplies current of $2\text{ A}$ to a load. The ratio of the primary and secondary windings is $1 : 25$ . The current in the primary coil is

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Answer: (b)

Ideal transformer: $\dfrac{I_p}{I_s} = \dfrac{N_s}{N_p}$ .
$N_p : N_s = 1 : 25 \Rightarrow I_p = 25 \times 2 = 50\text{ A}$
So the answer is (b) 50 A.

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