Automation System
Which of the following may be classified as an automation system?

None of these
All of these
robotics
automated warehouses
numerically controlled machine tools

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Automation System
Microcomputer-based control sys-tems

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

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Automation System
An aneroid barometer

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

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

most industrial control personnel are familiar with relay ladder logic diagrams and this is the easiest for them to use
All of these
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

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Automation System
The program execution time:

All of these
will vary depending on the language used
None of these
cannot be changed once the program is written
must be slower than the fastest mechanical operation that is to be controlled

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