What are the Advantages and Disadvantages of AC Induction Motors?

Advantages: 

AC induction motors have their own advantages. These includes-

• Simplicity of design – simple & cheap to construct.

• Reliability – they have no brushes or commutator and there is little friction to wear parts away.

• They can be built to suit almost any industrial requirement.

• They are economical and efficient to run for most purposes.

• Poly-phase induction motors are self-starting  

Disadvantages:

AC induction motors have some disadvantages as well. These include-

• They only work on AC.

• Their maximum speed is limited by the supply frequency (a 50 Hz supply limits the motor to about 3000 rpm).

• The Starting torque is low – they do not get heavy loads moving very quickly.

• They are not as efficient as some other AC motors when used in heavy industrial applications.

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