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

Uses an electron gun to continuously flood the surface of the tube.
None of these
Creates images on the screen by scanning straight-line vectors between selected points.
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.

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Automation System
If the transient response is under damped:

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
both a and b
None of these

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