SWADHIN Electrician Instructor/Laboratory Instructor/Technical Trainer Interview Questions and Answers

A dummy coil is a coil of wire used to replace a missing or damaged coil in an electrical machine.

• It is used to balance the magnetic field in a machine

• It is also used to prevent eddy currents

• It is called a dummy coil because it does not produce any useful work

• It is commonly used in AC generators and motors

A motor converts electrical energy into mechanical energy, while a generator converts mechanical energy into electrical energy.

• Motors use electrical energy to create rotational motion, while generators use rotational motion to create electrical energy.

• Motors have a rotor and a stator, while generators have a stator and a rotor.

• Motors are used in appliances, vehicles, and industrial machinery, while generators are used ...read more