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

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Automation System
What is the process lag?

The time it takes for the sensor to respond to a changed.
All of these
The lag in the error signal when the setpoint is changed.
None of these
The time it takes for the mass of the process to respond to an input change.

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