Automation System
The computer graphics system called SKETCHPAD was demonstrated at

Imperial college of Science and Technology, London, 1973
None of these
Cranfield Institute of Technology, London, 1962
Massachusetts Institute of Technology in 1963
University of Aston, Birmingham, 1960

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Automation System
One of the major benefits of using CAD in tool design is that:

there is better coordination in the materials-handling area
tool motions can be checked to see if there is interference between the tool and the object
product design represents approximately one-half the engineering costs
None of these
it simplifies the trial-and-error method

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Automation System
What is the difference between integral and derivative control?

derivative control does not eliminate offset error
All of these
None of these
derivative control responds to a change in the rate of change in the error signal
integral control has slower response to an error signal.

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