Introduction to Motors ,Generators and transformers

In this subject in our most of the time, we deal with rotating machines especially electromechanical energy conversion machines. DC as well as AC. we deal with motors and generators.

Motors: It is the machine used to convert electrical energy into mechanical energy.

Generators: It is a machine used to convert mechanical energy into electrical energy.

We deal with these machines in the subject of electrical machines but at the time of generation of electricity it is of the order of only 10-12kV but at the time of transmission it is of the order of 465-800kV so here the need of transformers comes into the picture. These are of two types 

Step-up transformer: whenever we need to convert the voltage for the production level ( 10-12kV ) to the transmission level(465-800kV) we use this type of transformer.

Step-down transformer: whenever we need to convert the voltage from the transmission level to the domestic level we use this type of transformer.