Automation System
What is the difference between integral and derivative control?

integral control has slower response to an error signal.
All of these
derivative control responds to a change in the rate of change in the error signal
derivative control does not eliminate offset error
None of these

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Automation System
Today, programmable controllers:

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

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Automation System
CAE and CAM are linked through:

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

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