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

All of these
the error is divided into discrete amounts
None 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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Automation System
A stepping motor;

has a commutator
can index positional movement.
None of these
has a speed proportional to voltage input
is a good choice where continuous rotation is needed

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