Scavenging air lines are connected to boiler...

Question 1 / 270705eccef9fbacbc34ba4d46c55

Question 1 of 270705eccef9fbacbc34ba4d46c55

Scavenging air lines are connected to boiler stack periscopes to __________.

Question 1 of 27070

Scavenging air lines are connected to boiler stack periscopes to __________.

🔍 Key Concepts

• Scavenging air purpose in engine and boiler systems • How stack gases might affect delicate optical or mechanical parts • The function and construction of a boiler stack periscope

💭 Think About

• Think about what a boiler stack periscope is used for and what happens inside a boiler stack during operation • Ask yourself: why would you want a flow of clean air around or through a periscope that looks into a hot, gas-filled space? • Consider which answer choice best matches the protective role that scavenging air usually plays in machinery systems

✅ Before You Answer

• Identify which options describe protection from heat/warping versus protection from contamination • Decide whether scavenging air is more likely used to keep parts cool, keep them clean, or control pressure • Eliminate any choices that do not logically relate to air flowing around or through the periscope area

Question 1 of 27070

Scavenging air lines are connected to boiler stack periscopes to __________.

keep the periscope tubing from warping

prevent stack gases from contaminating the periscopes internal components

maintain a negative pressure in the periscope line

keep the mirrors from misaligning