Automation System
Robots can increase productivity because:

they do not get tired
they do not take a vacation
None of these
production quality is uniform
All of these

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Automation System
Pressure sensors:

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

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Automation System
The program execution time:

None of these
All of these
cannot be changed once the program is written
will vary depending on the language used
must be slower than the fastest mechanical operation that is to be controlled

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Automation System
What is offset error?

the difference between the controller output and the setting of the manipulated variable.
the difference between the control setpoint value and the actual value.
All of these
the difference between the sensor input and the absolute sensed parameter.
None of these

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