Automation System
Compared to an open-loop system, a closed-loop control system is:

None of these
more stable
more complex
All of these
more accurate

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

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

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