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

Answer»

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SOLUTION :Here, `V_(P) = 2300 V,N_(P) = 4000, V_(s) = 230 V`
AS `V_(s)/V_(p) = N_(s)/N_(p)`
`therefore N_(s) = (V_(s).N_(p))/V_(p) = (230 XX 4000)/2300 = 400`


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