Automation System
Compared to humans, machines:

(a) and (c)
can make more complex decisions based on unexpected circumstances
None of these
can work in harsher environments
make fewer errors

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Automation System
Digital signals:

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

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Automation System
A discrete parts process is:

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

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