A Power Transmission Line Feeds Input Power at 2300 V to a Step Down Transformer with its Primary Windings Having 4000 Turns | Bzziii

A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The number of turns in the secondary in order to get output power at 230 V are 

(i) 4 
(ii) 40 
(iii) 400 
(iv) 4000




(iii) 400 

Explanation:

Given,

`"E"_{"i"}` = 2300V
`"E"_{0}` = 230V
`"N"_{"p"}` = 4000
`"N"_{"s"}` = ?

`\frac{"E"_{"i"}}{"E"_{0}}` = `\frac{"N"_{"p"}}{"N"_{"s"}}`

`\frac{2300}{230}` = `\frac{4000}{"x"}`

∴ x = 4000 = `"N"_{"s"}` 






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