Automation System
Programmable controllers:

are widely used in many different industries
are programmed using relay ladder logic
cannot perform functions other than relay logic
None of these
(a) and (c) above

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

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

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