Automation System
What two methods are available to build electronic continuous control?

Pneumatic and analog
All of these
Analog and mechanical
Analog and digital
None of these

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

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

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