Automation System
What is offset error?

the difference between the control setpoint value and the actual value.
All of these
the difference between the controller output and the setting of the manipulated variable.
None of these
the difference between the sensor input and the absolute sensed parameter.

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Automation System
A venturi tube:

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

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