Automation System
The SKETCHPAD system

is used for interactive Graphics
None of these
All of these
consisted of an cathode-ray oscilloscope driven by a Lincoln Tx2 computer where by graphical information was displayed on the screen.
is expensive because it is sophisticated and make demands on the power and resources of the computer.

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Automation System
A semi-continuous operation means:

the operation is continuous each shift, but stops between shifts
each operation in a sequence is continuous, but subsequent operations in the sequence may be different.
None of these
a computer is a required part of the machine
coffee breaks are allowed for the operator

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Automation System
What is proportional control?

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

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