Automation System
A common way to take x, y coordinates off a drawing is to use a

digitiser
Tablet
light pen
None of these
Direct view storage tube (DVST)

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

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

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Automation System
What is offset error?

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

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