Automation System
Four basic elements are required for an automated machine tool or production process. They are: input interface, memory, output interface and:

NC tape programming
computer graphics workstation
None of these
software
logic

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Automation System
A venturi tube:

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

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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.
None of these
All of these
The time it takes for the mass of the process to respond to an input change.

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