Automation System
In raster-scan colour monitors, colour can be intensified by:

using an in-line gun arrangement with a solid metal mesh
having each electron gun controlled by a composite signal
having each electron gun controlled by separate signal
grouping the phosphor dots in a circular pattern
None of these

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Automation System
What is offset error?

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

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