Permanent-split capacitor motors and shaded-pole motors are generally used for variable-speed control because they operate without having to disconnect a set of start windings with a ____ or starting relay.
A) membrane switch
B) centrifugal switch
C) pressure switch
D) rotary switch

Question

Quizplus · Accepted Answer

Centrifugal switches are used to disconnect the start windings in a motor once it reaches a certain speed. Permanent-split capacitor motors and shaded-pole motors do not require this type of switch because they are designed to operate without it. Therefore, B is the correct answer because it describes the type of switch that is not needed for these types of motors.

Permanent-Split Capacitor Motors and Shaded-Pole Motors Are Generally Used for Variable-Speed