Question

A power transmission line feeds input power at 2200 V to a step-down transformer with its primary windings having 300 turns. Find the number of turns in the secondary to get the power output at 220 V.

Answer 1

n_s= ?

n_p= 3000

E_p= 2200 V

E_S= 220 V

Since,
`E_s/E_p= n_s/n_p`

`220/2200= n_s/3000`

`n_s = 300`