ASIS-CPP Exam QuestionsBrowse all questions from this exam

ASIS-CPP Exam - Question 49


The ionization fire detector warns of fire by responding to:

Show Answer
Correct Answer: AD

Ionization fire detectors work by using a small amount of radioactive material to ionize the air between two electrically charged plates. When smoke enters the chamber, it disrupts the ionization process, which in turn reduces the flow of current and triggers the alarm. Therefore, the ionization fire detector responds to smoke.

Discussion

1 comment
Sign in to comment
Darioarg78Option: A
Nov 27, 2021

Ionization-type smoke alarms have a small amount of radioactive material between two electrically charged plates, which ionizes the air and causes current to flow between the plates. When smoke enters the chamber, it disrupts the flow of ions, thus reducing the flow of current and activating the alarm.