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
What is the difference between integral and derivative control?

derivative control does not eliminate offset error
derivative control responds to a change in the rate of change in the error signal
None of these
integral control has slower response to an error signal.
All of these

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Automation System
A stepping motor;

is a good choice where continuous rotation is needed
can index positional movement.
has a commutator
has a speed proportional to voltage input
None of these

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Automation System
Pressure sensors:

use capacitive variations to sense pressure
use the piezoresistive effect in strain gauge sensors
All of these
use an aneroid chamber with a variable resistance output
None of these

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