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A power transmission line feeds input po...

A power transmission line feeds input power at 2300 V 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 5A and its efficiency is `90%`, the output current would be :

Text Solution

Verified by Experts

The correct Answer is:
45
`P_("primary")=2300xx5`
`P_("Output")=(230xx1)`
As efficiency is `90%`
`"So "(90)/(100)xx2300xx5=10xxi" "i=45A`
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