Automation System
The electronic component that has been the key to recent developments in automation is the:

diode
improved vacuum tube
integrated circuit
None of these
transistor

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Automation System
Ergonomics refers to:

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

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Automation System
An aneroid barometer

is very unreliable
can measure only atmospheric pressure
measures pressure by sensing deflection of an evacuated chambers.
None of these
can be used to measure gas or liquid flow rates

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