Difference between Synchronous Motor and Induction Motor

Table of Contents

The following are the main comparison between Synchronous Motor & Induction Motor

Sr. No.	Synchronous Motor	Induction Motor
1.	It is not self starting.	It is self starting motor.
2.	It run at constant speed known as synchronous speed.	Its speed decrease with load.
3.	The motor can be operated at all power factors whether lagging or leading.	The motor operates always lagging power factors only.
4.	It can be used for power factor correction in addition to supplying torque to drive mechanical load.	It can be used for driving mechanical loads only.
5.	Its construction is complicated.	Its construction is simple.
6.	The motor requires a D.C. exciter.	No exciter is required.
7.	It has to be synchronized.	It is not be synchronized.
8.	The synchronous motor has a tendency to hunt.	They do not hunt.
9.	Cost is more.	Cheaper than synchronous motor.
10.	It is made efficient than induction motor.	Its efficiency is lesser than synchronous motor.