Automation System
Ergonomics refers to:

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

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Automation System
Stepping motors:

can run at varying speeds
can be built to index different amounts by changing the pole configuration
do not require commutators
All of these
can run both clockwise and counterclockwise

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