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

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

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Automation System
A stepping motor;

has a commutator
None of these
can index positional movement.
has a speed proportional to voltage input
is a good choice where continuous rotation is needed

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Automation System
One of the major benefits of using CAD in tool design is that:

tool motions can be checked to see if there is interference between the tool and the object
it simplifies the trial-and-error method
None of these
product design represents approximately one-half the engineering costs
there is better coordination in the materials-handling area

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