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

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

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

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

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