The two speeds squirrel cage induction motors have two separate windings that can be wound for any number of poles so that other speed ratios can be obtained. Two speed motor achieves different speeds by switching the configuration of the electrical windings, indirectly adding or removing poles and thus varying the rotor speed. The two speeds squirrel cage induction motors can be designed especially for driving centrifugal machines and fans. The other motors can be used in applications with constant torque requirements such as mixers, conveyors.