What's the reason transformers are used in power stations?

Transformer is most efficient electrical machine ever invented on the earth. It steps up or steps down the voltage to desired voltage level. The generation voltage is usually 11kV, 33kV, 66kV. read more

The reason is to save energy in transmission. They use a transformer in power station to raise the voltage to a higher level. The higher voltage, the smaller current, when transmitting same power. The power loss equal to square of current miltiplying with resistance. So smaller current will lead to smaller power loss. read more

A transformer that increases the voltage is called a step-up transformer A transformer that decreases the voltage is called a step-down transformer Step-down transformers are used in mains adapters and rechargers for mobile phones and CD players. read more