Automation System
A dc servo motor:

None of these
All of these
uses a variable dc voltage for speed control
can provide precise position control
uses a tachometer for speed feedback

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

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

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