Automation System
A continuous process is:

self-contained in that raw materials enter the process and an identifiable products exits the process.
used only with analog controllers.
used only for simple tasks
one that never shuts down
None of these

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Automation System
A venturi tube:

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

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Automation System
A dc servo motor:

uses a variable dc voltage for speed control
uses a tachometer for speed feedback
can provide precise position control
All of these
None of these

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