Final answer:
The most common type of single phase induction motors use two sets of stator windings for improved starting and running characteristics.
Step-by-step explanation:
The most common types of single phase induction motors (1/6 hp and larger) are those that use two sets of stator windings. These windings are designed for different functions, with one commonly being the main winding that sets up the flux in the motor, and the other being the auxiliary winding which is used to help start the motor. The use of two windings allows for more consistent starting and running characteristics, and this setup is particularly common in motors found in household appliances and various machinery.