question_answer

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 5A and its efficiency is \[90%\], the output current would be:  [JEE Main 09-Jan-2019 Evening]

A)       45 A

B) 35 A

C) 25 A

D) 50 A

Correct Answer: A

Solution :

[a]