Process Engineering Division – Instrumentation and Automation Section – Daily Question – Question from 2020-04-17
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Process Engineering Section – Instrumentation and Control Section – Daily Question – Question from 2020-04-17: Multiple-choice question: 91. A certain control system uses a proportional-integral controller. Someone uses a trial-and-error method, starting with proportional control and then adding integral control, to tune the parameters of this controller. If the proportionality gain is already fairly appropriate, what happens when integral control is added? A. The proportionality should be appropriately reduced. B. The proportionality should be appropriately increased. C. There is no need to change the proportionality. Answer: B. The proportionality should be appropriately increased
B. The proportionality should be appropriately increased
A. The proportionality should be appropriately reduced