Automation System
A dc servo motor:

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

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

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

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