Automation System
FORTRAN is:

a mathematically oriented language
All of these
a medium-level language
machine dependent
None of these

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

All of these
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.

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Automation System
How is the integral mode implemented on a digital controller?

the error is divided into discrete amounts
the digital controller cannot handle integral mode
the error signal is summed over a discrete time interval and accumulated by the controller
None of these
All of these

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Automation System
D/A (digital to analog) conversion:

both (b) and (c)
None of these
must be fed through a filter to reproduce the original signal accurately
results in a binary code as the final output
has to be sampled at 1/2 the highest input frequency

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