Inside the switch of a typical ____ controller is a series of contacts mounted on a movable cylinder.
A)series
B)drum
C)stationary
D)circular

Question

Quizplus · Accepted Answer

The term "drum controller" describes a type of electrical switch used in many industrial applications. Inside the switch, a series of contacts are mounted on a movable cylinder, or "drum," which rotates to open and close various circuits.

Inside the Switch of a Typical ____ Controller Is a Series