Automation System
Many things can be done to minimize downtime loss. Identify two of them.

stock critical spare parts
establish a user forum program
provide an extra workstation
both b and c
None of these

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

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
the digital controller cannot handle integral mode
None of these

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Automation System
An aneroid barometer

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

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