Chapter 11 Fire Detection and Alarm Systems Questions with correct Answers 2023

Chapter 11 Fire Detection and Alarm Systems Questions with correct Answers 2023 NFPA 72 National Fire Alarm Code fire detection and alarm systems are designed and installed in accordance with this NFPA 72 Requirements at least one smoke alarm located on each level of a residence one smoke alarm located in each bedroom one smoke alarm located in the corridor outside each sleeping area split-level homes: one smoke alarm is sufficient for both ceiling elevations household fire alarms most consist of a self contained alarm and detection unit positioned to wake sleeping occupants most fire deaths and injuries occur in the home primary victims are children less than five years old and adults more than sixty five years of age NFPA 13D Standard for the Installation of Sprinkler Systems in One and Two Family Dwellings primary sources for ignition of residential fires are careless smoking Recent phenomenon in residential fires... halogen lamps, particularly in college dorms per NFPA 72, all smoke alarms are required to sound.... simultaneously once one alarm is activated when installed in new construction Most new smoke alarms have a self contained battery that supplements.... 120 volt, AC power supply What type of circuit is best for fire alarms? Typically, parallel wiring is good because it is reliable and it constantly monitors the integrity of each circuit In the 1970s, residential detectors.... saw a drastic increase in awareness fire deaths decreased significantly once batteries began to expire in large numbers the number of deaths increased house fires typically involve a period of __________, which makes smoke detectors so effective smoldering decibel unit of sound of a given intensity at a given distance ex- 84 dB at 100 ft. Most people will be awakened with a signal of ______ dB over the ambient noise level 15 dB