Automation System
How is the integral mode implemented on a digital controller?

None of these
the error is divided into discrete amounts
the error signal is summed over a discrete time interval and accumulated by the controller
the digital controller cannot handle integral mode
All of these

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Automation System
A discrete parts process is:

often encountered in manufacturing
normally a repetitive series of operations
None of these
the same as a continuous process except a different controller must be used
(b) and (c)

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

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

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