Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACTransformerEasy2 minPYQ_2019

PhysicsEasysingle choice

A power transmission line feeds input power at $2300 V$ to a step down transformer with its primary windings having $4000$ turns. The output power is delivered at $230 V$ by the transformer. If the current in the primary of the transformer is $5 A$ and its efficiency is $90 %$ , the output current would be:

Options:

Answer:

Solution:

Efficiency $n = 90 %$

$\Rightarrow 0.9 \times p o w e r i n = P o w e r o u t$

$0.9 \times 2300 \times 5 = 230 \times I_{o u t}$

$I_{o u t} = 45 A$

Stream:JEESubject:PhysicsTopic:EMI/ACSubtopic:Transformer

⏱ 2mℹ️ Source: PYQ_2019

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