Automation System
Ergonomics refers to:

the cost relationship of the workstation versus productivity
None of these
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
the technology involved in the workstation itself

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Automation System
A dc servo motor:

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

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