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NEET 2014 (AIPMT) · AC Generator & Transformer

AC Generator & Transformer question from NEET 2014 (AIPMT)

Q50NEET 2014 · AIPMTEasy

AC Generator & Transformer

A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil is 6 A, the voltage across the secondary coil and the current in the primary coil respectively are

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Answer: (b)

$I_p = \dfrac{P_{in}}{V_p} = \dfrac{3000}{200} = 15\text{ A}$
$P_{out} = 0.9 \times 3000 = 2700\text{ W}$
$V_s = \dfrac{2700}{6} = 450\text{ V}$
So the answer is (b) 450 V, 15 A.

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