Automation System
Numerical control:

is a method for controlling the operation of a machine by means of a set of instructions
applies only to milling machines
All of these
is a method for producing an exact number of parts per hour
None of these

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Automation System
What is proportional control?

None of these
The gain is independent of offset error.
It has a discrete output for each error value
All of these
The controller output varies continuously over a range

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