Automation System
A Hall effect switch is usually used to:

sense a vacuum
None of these
measure temperature
measure voltage
sense the presence of a magnetic object.

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Automation System
CAE and CAM are linked through:

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

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Automation System
A process controller:

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

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