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.
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.
None of these
Makes changes on the image by increasing the anode voltage.

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Automation System
If the transient response is under damped:

both a and b
None of these
the value of the output will exceed the value of the input at times during the transient period
the present overshoot is zero
steady-state will be reached faster than if the system is overdamped

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