Automation System
What Is a process variable?

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

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Automation System
Ergonomics refers to:

the cost relationship of the workstation versus productivity
None of these
the technology involved in the workstation itself
the human aspect of the environment around the workstation as well as the workstation itself
the level of involvement the operator has with the workstation

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Automation System
Programmable controllers:

are programmed using relay ladder logic
cannot perform functions other than relay logic
(a) and (c) above
None of these
are widely used in many different industries

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