Automation System
A flip-flop:

is a combinational logic device
is a sequential logic device
(a) and (c)
None of these
remembers what was previously stored in it

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Automation System
A dc servo motor:

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

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

The beam constantly travels across the screen to turn on/off a series of pixels.
Makes changes on the image by increasing the anode voltage.
None of these
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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Automation System
Trend analysis:

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

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