*TB 42- Smoke Detectors

Question 1

According to a study, _____ (ionization or photoelectric?) detectors are more reliable in warning against the hazards of visible smoke build-up from the slow smoldering fire so common to residential occupancies. These detectors appear to be less prone to unwarranted nuisance alarms.

Answer 1

Photoelectric

Question 2

Smoke Detectors are approved to give an area of coverage equivalent to a ___ ft diameter.

Answer 2

25’

Question 3

Smoke detectors:
Ionization or photoelectric?
_____ detectors are more sensitive to smoldering fires, and _____ detectors are more sensitive to flaming fires.

Answer 3

1. Photoelectric

2. Ionization

Question 4

What are the two types of smoke detectors?

Answer 4

Photoelectric and ionization