Automation System
One advantage of a PC in industrial control is that it:

has a reliable long life compared to relay logic
None of these
is unreliable because there are no moving parts
All of these
is very difficult for the inexperienced programmer to understand

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Automation System
The main function(s) of computer in CAD is/are

All of these
None of these
To enhance the analytical and logical power of the designer
To serve as an extension to the memory of the designer
To relieve the designer from routine repetitious tasks.

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Automation System
Microcomputer-based control sys-tems

will just keep their present capability
All of these
None of these
will have more standard industrial application software available in the future.
will tend to increase in cost.

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Automation System
An aneroid barometer

measures pressure by sensing deflection of an evacuated chambers.
is very unreliable
can measure only atmospheric pressure
None of these
can be used to measure gas or liquid flow rates

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

None of these
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

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