Automation System
Resolution in a CRT refers to:

None of these
the number of phosphor dots that react when hit by the electron beam
the number of pixels in each square centimeter
the speed at which the monitor can accept data from the computer
the number of addressable elements on the tube

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Automation System
Relay ladder logic is used in a PC because:

it is the best industrial control language ever developed.
it is impossible to write a control program for a machine in any other logic
All of these
most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
None of these

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Automation System
Semiconductor devices:

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

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