JEE Mains · Physics · STD 12 -Electromagnetic induction
- JEE Mains 2022
- Medium
- MCQ
A transformer operating at primary voltage \(8\,kV\) and secondary voltage \(160\,V\) serves a load of \(80\,kW\). 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.
Pick an option to check your answer.
Answer & Solution
Correct Answer
(C) \(800\,\Omega\) and \(0.32\,\Omega\)
Step-by-step Solution
Detailed explanation
\(\frac{\left(8 \times 10^{3}\right)^{2}}{R_{p}}=80 \times 10^{3}\)
\(R _{ p }=800\,\Omega\)
\(\frac{(160)^{2}}{R_{S}}=80 \times 10^{3}\)
\(R _{ S }=0.32\,\Omega\)
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