Question

Devices that use principle of electric motor(3 devices name )

Answer 1

In electrical engineering, electric machine is a general term for machines using electromagnetic forces, such as electric motors, electric generators, and others. They are electromechanical energy converters: an electric motor converts electricity to mechanical power while an electric generator converts mechanical power to electricity. The moving parts in a machine can be rotating (rotating machines) or linear (linear machines). Besides motors and generators, a third category often included is transformers, which although they do not have any moving parts are also energy converters, changing the voltage level of an alternating current.
fan
clock
electric motor
means the thing which turn round n round in a circle direction with the help of electric motor

Answer 2

Names are:-
1.Washing machine.
2.Fan.
3.Clock motor.