Automation System
A flip-flop:

(a) and (c)
is a sequential logic device
is a combinational logic device
remembers what was previously stored in it
None of these

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

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

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