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

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

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

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

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