Automation System
A discrete parts process is:

None of these
often encountered in manufacturing
normally a repetitive series of operations
(b) and (c)
the same as a continuous process except a different controller must be used

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Automation System
A stepping motor;

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

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Automation System
Digital signals:

have a frequency measured in units of hertz
can have three possible levels
None of these
are assigned values of 1 or 0 depending on the voltage level
have a sinusoidal shape.

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