Automation System
An operating system:

None of these
provides ability for other programmers to understand the software structure
All of these
can help reduce software development time
is useless in most control applications

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Automation System
What is the process lag?

The lag in the error signal when the setpoint is changed.
The time it takes for the sensor to respond to a changed.
All of these
None of these
The time it takes for the mass of the process to respond to an input change.

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Automation System
An aneroid barometer

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

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