Automation System
The new industrial revolution has been caused by:

None of these
advances in electronics
the Vietnam War
social unrest
demand for higher wages

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Automation System
An aneroid barometer

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

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Automation System
Today, programmable controllers:

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

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