Automation System
Which type of digitizer measures a wave traveling at the speed of sound?

Sonic
Electrostatic
None of these
Caparitive
Digitizing sr amer

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Automation System
An aneroid barometer

measures pressure by sensing deflection of an evacuated chambers.
can be used to measure gas or liquid flow rates
is very unreliable
None of these
can measure only atmospheric pressure

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

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

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