Automation System
CAD/CAM is the inter-relationship between:

marketing and design
engineering and manufacturing
manufacturing and marketing
engineering and marketing
None of these

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

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

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Automation System
Trend analysis:

requires a very expensive system to implement
is a brand new concept
None of these
is used only in financial planning
can improve control system response

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