Automation System
The program execution time:

cannot be changed once the program is written
will vary depending on the language used
None of these
All of these
must be slower than the fastest mechanical operation that is to be controlled

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

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

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