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

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

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Automation System
A dc servo motor:

can provide precise position control
None of these
uses a tachometer for speed feedback
uses a variable dc voltage for speed control
All of these

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Automation System
An operating system:

All of these
None of these
is useless in most control applications
can help reduce software development time
provides ability for other programmers to understand the software structure

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