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

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

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Automation System
What is offset error?

the difference between the sensor input and the absolute sensed parameter.
the difference between the control setpoint value and the actual value.
None of these
All of these
the difference between the controller output and the setting of the manipulated variable.

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Automation System
How is the integral mode implemented on a digital controller?

All of these
None of these
the error signal is summed over a discrete time interval and accumulated by the controller
the digital controller cannot handle integral mode
the error is divided into discrete amounts

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