Automation System
A process controller:

is useful in a continuous process control application
All of these
None of these
can interface to digital and analog I/O
can solve a PID process control equation easily

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Automation System
What is proportional control?

All of these
None of these
It has a discrete output for each error value
The gain is independent of offset error.
The controller output varies continuously over a range

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Automation System
Trend analysis:

is a brand new concept
is used only in financial planning
can improve control system response
None of these
requires a very expensive system to implement

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