Automation System
Automation normally means:

a net increase in jobs.
a net loss of jobs.
All of these
None of these
no change in jobs.

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Automation System
An aneroid barometer

None of these
can measure only atmospheric pressure
is very unreliable
measures pressure by sensing deflection of an evacuated chambers.
can be used to measure gas or liquid flow rates

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Automation System
What is proportional control?

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

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Automation System
Today, programmable controllers:

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

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