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Industrial automation systems rely heavily on accurate measurement, timely detection, and safe control. Whether you are a student, technician, or working instrumentation engineer, understanding how gas detectors, sensors, solenoid valves, and control devices work is essential.
In this post, we bring you 50 carefully selected multiple-choice questions (MCQs) covering gas detection, process analyzers, industrial sensors, solenoid valves, actuators, and safety systems. Each question includes a clear answer and explanation to help you learn concepts quickly and effectively.
What You’ll Learn From This MCQ Set
✔ Fundamentals of gas detectors & analyzers
✔ Working principles of sensors and solenoid valves
✔ Basics of control valves, actuators & safety systems
✔ Interview-oriented and exam-ready questions
✔ Practical industrial automation knowledge



