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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 :

A

45A

B

25A

C

35A

D

50A

Text Solution

Verified by Experts

The correct Answer is:
A
`eta=(e_si_s)/(e_p i_p)xx100`
`90 =(230 xxi_s)/(2300 xx5)xx100`
`i_s = 45A`
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