The reverse direction of a drum controller is accomplished by reversing the current in both the armature circuit and the shunt and series fields.

Question

Quizplus · Accepted Answer

The reverse direction of a drum controller is typically accomplished by reversing the current in either the armature circuit or the field circuit, but not both simultaneously. Reversing both would keep the motor running in the same direction.

The Reverse Direction of a Drum Controller Is Accomplished by Reversing