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
None of these
the digital controller cannot handle integral mode
the error is divided into discrete amounts

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Automation System
Sensors:

are easily developed
probably will not improve over the next decade
None of these
are not important in automation
will be much smarter and more sophisticated in the future

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