Automation System
Semiconductor devices:

are less reliable than electro¬mechanical components
None of these
have a very short infant mortality period
usually have a very short MTBF (mean time between failure)
All of these

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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.
Uses an electron gun to continuously flood the surface of the tube.
None of these
Creates images on the screen by scanning straight-line vectors between selected points.

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Automation System
Pressure sensors:

None of these
use the piezoresistive effect in strain gauge sensors
use capacitive variations to sense pressure
All of these
use an aneroid chamber with a variable resistance output

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Automation System
Vision sensors:

None of these
can not improve much in the next decade
All of these
will remain very costly
will more closely match the capabilities of the human eye

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