Automation System
Time proportioning control:

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

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

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

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