Process Engineering Division – Instrumentation and Automation Technology Exchange Forum – Daily Question – Questions 12–25

2019-12-25View Original

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Process Engineering Division – Instrumentation and Automation Technology Exchange Forum – Daily Question – Questions 12–25: Multiple-choice questions: Regarding the concept of interlock, which of the following statements is correct? ( ) (Multiple choice) (A) Solenoid valves are generally those that remain powered on continuously. (B) The contacts of fault detection elements are usually of the normally closed type; they stay closed under normal operating conditions and open when limits are exceeded. (C) Not all deviations from normal process parameters will trigger an interlock action. (D) Interlocks for critical equipment should use a \"three-out-of-two detection system.\" Answer: ABCD

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Process Engineering Division – Instrumentation and Automation Technology Exchange Forum – Daily Question – Questions 12–25

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