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

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

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Automation System
What is the process lag?

None of these
The lag in the error signal when the setpoint is changed.
The time it takes for the sensor to respond to a changed.
The time it takes for the mass of the process to respond to an input change.
All of these

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