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JEE Main 2022 (28 Jul, Shift 2) · AC Generator & Transformer

AC Generator & Transformer question from JEE Main 2022 (28 Jul, Shift 2)

Q35JEE Main 2022 · 28 JUL · SHIFT 2Medium

AC Generator & Transformer

A transformer operating at primary voltage $8\text{ kV}$ and secondary voltage $160\text{ V}$ serves a load of $80\text{ kW}$ . Assuming the transformer to be ideal with purely resistive load and working on unity power factor, the loads in the primary and secondary circuit would be

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Answer: (c)

Secondary: $I_s = \dfrac{80000}{160} = 500\text{ A}$ , $R_s = \dfrac{160}{500} = 0.32\ \Omega$
Primary: $I_p = \dfrac{80000}{8000} = 10\text{ A}$ , $R_p = \dfrac{8000}{10} = 800\ \Omega$
So the answer is (c) $800\ \Omega$ and $0.32\ \Omega$ .

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