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

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

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Automation System
The computer graphics system called SKETCHPAD was demonstrated at

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

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Automation System
If the transient response is under damped:

None of these
the present overshoot is zero
the value of the output will exceed the value of the input at times during the transient period
both a and b
steady-state will be reached faster than if the system is overdamped

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