Automation System
What Is a process variable?

All of these
A manipulated variable
A controlled variable
None of these
A process parameter that changes value

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Automation System
The program execution time:

All of these
None of these
must be slower than the fastest mechanical operation that is to be controlled
will vary depending on the language used
cannot be changed once the program is written

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Automation System
A semi-continuous operation means:

a computer is a required part of the machine
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
the operation is continuous each shift, but stops between shifts
coffee breaks are allowed for the operator
None of these

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