Automation System
Trend analysis:

requires a very expensive system to implement
is used only in financial planning
can improve control system response
None of these
is a brand new concept

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Automation System
A sequence controller:

performs on/off control functions in relation to time.
is a mechanical only controller
None of these
is difficult to program
is no longer in widespread use

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Automation System
The refresh-vector CRT uses which of the following techniques?

None of these
Makes changes on the image by increasing the anode voltage.
The beam constantly travels across the screen to turn on/off a series of pixels.
Uses an electron gun to continuously flood the surface of the tube.
Creates images on the screen by scanning straight-line vectors between selected points.

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