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

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

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

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.
derivative control does not eliminate offset error

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