Question

What is step up and step down transformer?
To transfer electric energy from generating sta-
tion initially step up transformer is used. Why?
​

Answer 1

Explanation:

Power is voltage x current. So to carry a given power, you can either have a high voltage and lower current, or a lower voltage and higher current.

Carrying a high current means more resistive losses in the power lines, since the voltage drop is proportional to the current. So by stepping the voltage up, the current is reduced and so the transmission is therefore more efficient over long distances.

Power