Automation System
Compared to an open-loop system, a closed-loop control system is:

All of these
more accurate
more complex
None of these
more stable

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Automation System
The refresh-vector CRT uses which of the following techniques?

Uses an electron gun to continuously flood the surface of the tube.
Makes changes on the image by increasing the anode voltage.
The beam constantly travels across the screen to turn on/off a series of pixels.
None of these
Creates images on the screen by scanning straight-line vectors between selected points.

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