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 separate signal
having each electron gun controlled by a composite signal
grouping the phosphor dots in a circular pattern
None of these

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Automation System
Straight-line operations:

can include diagonal cuts if they aren't curved
must be parallel to one of the axes of the coordinate system
None of these
must be limited to two per workpiece
All of these

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Automation System
A process controller:

is useful in a continuous process control application
All of these
can solve a PID process control equation easily
can interface to digital and analog I/O
None of these

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