Process Engineering Division – Instrumentation and Automation Technology Exchange Forum – Daily Question – Questions 12–27
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Process Engineering Division – Instrumentation and Automation Technology Exchange Forum – Daily Question – Questions 12–27: Multiple-choice questions: Regarding cascade control systems, which of the following statements is incorrect? ( ) (A) is a controller that simultaneously controls two or more control valves. (B) Each control valve operates within a certain signal range output by the controller, in accordance with the process requirements. (C) The main purpose is to increase the adjustable range R. (D) The main purpose is to decrease the adjustable range R. Answer: D
D) The main purpose is to reduce the adjustable range R
(D) The main purpose is to reduce the adjustable range R