A power transmission line feeds input power at 2300 V to a stepdown 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?


Given: Input voltage = 2300 V

No. of turns = 4000


Output voltage = 230 V


The relation between voltage and no. of turns is written as follows:


V1/V2 = n1/n2


Substituting the values


2300(V)/230(V) = 4000/ n2


On calculating, we get


n2 = 400


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