The device shown in the illustration is a...

Question 1 / 205eccef9bbacbc34ba4d453ca

Question 1 of 205eccef9bbacbc34ba4d453ca

The device shown in the illustration is a __________. Illustration MO-0008

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Question 1 of 20

5eccef9bbacbc34ba4d453ca

The device shown in the illustration is a __________. Illustration MO-0008

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🔍 Key Concepts

• Notice the reference tube and measuring tube and how air flows through them. • Focus on the lamp, mirrors, and P.E.C. (photoelectric cells) and what they are typically used to detect in engine safety systems. • Think about which devices need to compare a clean sample with a sample from the engine to detect a dangerous condition.

💭 Think About

• What is the purpose of having both a reference tube and a measuring tube with light passing between mirrors? • Why would a rotary valve sample from multiple points and send them past photoelectric cells – is that more consistent with gas concentration, crankcase mist, or liquid level? • Which of the listed devices would most likely use optical (photoelectric) detection rather than chemical or mechanical measurement?

✅ Before You Answer

• Match the use of photoelectric cells (P.E.C.) with the most appropriate option in the choices. • Identify which option involves comparing two paths or samples, as suggested by the terms reference tube and measuring tube. • Eliminate any answer choices that normally would NOT use a lamp and mirrors as their primary sensing method.

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Question 1 of 20

The device shown in the illustration is a __________. Illustration MO-0008

photoelectric, explosive gas indicator, for use in high-speed, two-stroke, trunk type piston engines

comparator type mist detector for large low-speed, crosshead type engines

rotary type mist detector, designed for use in four-stroke, high-speed diesel engines

level type explosimeter, for small medium-speed, trunk type piston engines

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Question 1 / 205eccef9bbacbc34ba4d453ca

Question 1 of 205eccef9bbacbc34ba4d453ca

The device shown in the illustration is a __________. Illustration MO-0008

Back

Question 1 of 20

5eccef9bbacbc34ba4d453ca

The device shown in the illustration is a __________. Illustration MO-0008

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed