Automation System
An aneroid barometer

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

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Automation System
Light sensors:

None of these
cannot be used a s limit switches.
work in direct sunlight
never use infrared light as light source
come in a wide variety of mounting styles

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Automation System
CAE and CAM are linked through:

parts production and testing
a common data base and communications system
assembly automation and tool production.
None of these
NC tape programming and automated design

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