Automation System
Stepping motors:

can run both clockwise and counterclockwise
can be built to index different amounts by changing the pole configuration
do not require commutators
can run at varying speeds
All of these

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Automation System
The "walk-through" method of programming a robot involves:

physically moving the robot through all the motions it is to repeat
walking through your suggested procedure with your supervisor prior to programming
All of these
moving the robot from one location to another
None of these

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