Automation System
One of the following is not considered a method of input control in a CAD system.

Programmable function box
Joystick
Touch terminal
Plotter
None of these

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Automation System
A stepping motor;

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

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

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

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