Automation System
D/A (digital to analog) conversion:

None of these
has to be sampled at 1/2 the highest input frequency
results in a binary code as the final output
both (b) and (c)
must be fed through a filter to reproduce the original signal accurately

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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 sensor input and the absolute sensed parameter.
All of these
the difference between the control setpoint value and the actual value.
None of these

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