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

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

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Automation System
What is proportional control?

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

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Automation System
Numerical control:

None of these
applies only to milling machines
All of these
is a method for producing an exact number of parts per hour
is a method for controlling the operation of a machine by means of a set of instructions

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