Automation System
An aneroid barometer

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

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Automation System
What is the process lag?

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

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