Automation System
In the operation of a programmable controller:

All of these
mathematics cannot be performed
None of these
any latched data must be done using an external latching relay
all of the logic status is maintained in memory

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

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

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