Automation System
A dc servo motor:

All of these
None 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
One of the major benefits of using CAD in tool design is that:

product design represents approximately one-half the engineering costs
it simplifies the trial-and-error method
None of these
tool motions can be checked to see if there is interference between the tool and the object
there is better coordination in the materials-handling area

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