Automation System
What Is a process variable?

None of these
All of these
A manipulated variable
A controlled variable
A process parameter that changes value

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Automation System
If the transient response of a system is overdamped:

All of these
None of these
the value of the output exceeds the value of the input at times during the transient period.
the value of the output never exceeds the value of the input during the transient period.
the value of the output never stabilizes.

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Automation System
Today, programmable controllers:

are more powerful then the first controllers on the market
are relatively low cost compared with the original digital equipment available for industrial control
can be cost effective even when replacing just a few relays
None of these
All of these

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