Question 76General Subjects - QMED

70% to pass

What type of respiratory protection provides the greatest protection from the various respiratory hazards, is specifically designed for emergency and rescue situations, but has time constraints associated with its use?

AEmergency escape breathing apparatus
BPowered air-purifying respirator
CReusable full-mask respirator
DSelf-contained breathing apparatus
AI Explanation

The correct answer is D) Self-contained breathing apparatus (SCBA). SCBA provides the greatest level of respiratory protection because it is a self-contained unit that supplies clean, breathable air from a pressurized tank. This makes it well-suited for emergency and rescue situations where there may be immediately dangerous to life or health (IDLH) atmospheres. Unlike the other options, SCBA is not limited by the capacity or function of external air-purifying filters or canisters. The other options are less protective. Emergency escape breathing apparatus has a limited duration, powered air-purifying respirators rely on filters, and reusable full-mask respirators also use filters that can become compromised in IDLH conditions.

Related Questions
Q@q.QuestionNumber:A ball bearing will overheat if _______________. Q@q.QuestionNumber:The main difference between a common lathe dog and a safety lathe dog is that t... Q@q.QuestionNumber:Energy imparted to the hydraulic fluid in an operating hydraulic system is store... Q@q.QuestionNumber:The lathe tool shown as figure "N" in the illustration is commonly known as a/an... Q@q.QuestionNumber:Which type of pump would normally be used to transfer fairly large quantities of...

Ready to test your knowledge?

Take a General Subjects - QMED Practice Exam
Official Resources
46 CFR Machinery & Electrical 46 CFR Engineering USCG National Maritime Center
← Previous All Questions Next →

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience.

Get the App