Automation System
A stepping motor;

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

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Automation System
A continuous process is:

used only for simple tasks
self-contained in that raw materials enter the process and an identifiable products exits the process.
None of these
one that never shuts down
used only with analog controllers.

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