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

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

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Automation System
Today, programmable controllers:

are relatively low cost compared with the original digital equipment available for industrial control
None of these
can be cost effective even when replacing just a few relays
are more powerful then the first controllers on the market
All of these

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Automation System
Time proportioning control:

a and b above.
can be used on a PM550 programmable process controller
is less efficient than normal PID control
cannot use a TM990 micro¬computer
None of these

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