Automation System
What is offset error?

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

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Automation System
Stepping motors:

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

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