Automation System
The SKETCHPAD system

All of these
is used for interactive Graphics
None of these
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.
is expensive because it is sophisticated and make demands on the power and resources of the computer.

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

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

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Automation System
Speech recognition:

will be used in more applications as the technology matures.
All of these
None of these
will never be used in industrial controls
is already widely used in industrial controls

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Automation System
A venturi tube:

is made only of metal
is extremely difficult to use
can be used to measure gas or liquid flow rates
measures the presence of a liquid
None of these

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