Automation System
What two disciplines are usually tied by a common data base?

None of these
Drafting and documentation
Computer-aided design and computer-aided manufacturing
Testing and analysis
Documentation and geometric modeling

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

All of these
it is impossible to write a control program for a machine in any other logic
it is the best industrial control language ever developed.
None 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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