Automation System
Flood guns bombard the phosphor surface of the tube in which one of the following types of CRT technology?

Refresh-vector CRT
None of these
Direct view storage tube
Stroke CRT
Raster scan CRT

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Automation System
What is the difference between integral and derivative control?

derivative control does not eliminate offset error
All of these
derivative control responds to a change in the rate of change in the error signal
None of these
integral control has slower response to an error signal.

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