Automation System
A common data base is one requisite for converting CAD and CAM to CIM. Another is that:

the user must have access to both hardware and software
the system must make provision for new techniques.
there should be a common 3-D part description system.
None of these
technical assistance must be provided to the user.

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Automation System
A stepping motor;

None of these
is a good choice where continuous rotation is needed
has a speed proportional to voltage input
has a commutator
can index positional movement.

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