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Fire alarm 2 Questions and Answers Graded A+
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Fire alarm 2 Questions and Answers Graded A+ What are the three sides of the fire triangle? Oxygen, fuel, ignition source What are products of combustion? Heat Radiant energy Smoke Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:05 / 0:15 Full scr...

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  • October 3, 2024
  • 8
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • fire alarm 2 questions and answers graded a
  • what are the three sides of the fire triangle oxy
  • what are products of combustion heat radiant ener
  • heat is produced when materials react to form si

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  • Fire Alarm
  • Fire Alarm

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Fire alarm 2 Questions and Answers
Graded A+


What are the three sides of the fire triangle? - answer Oxygen, fuel, ignition source

What are products of combustion? - answer Heat
Radiant energy
Smoke

Heat is produced when materials ? react to form simpler compounds. - answer
exothermically

Smoke particles are usually about what size? - answerBetween 0.01 microns to about
5,000 microns

Smoke detectors undergoing UL testing must actuate between ? per foot obscuration. -
answer0.5-4.4%

A condition where a burning fuel produces smoke without flames is known as ? . -
answerpyrolysis

During the UL tests, system-powered smoke detectors must respond to a polystyrene
fire within ? - answer2 minutes

What kind of detector is most appropriate for an elevator lobby in an apartment
building? - answerSpot-type smoke detector

What kind of detector is most appropriate for an unenclosed, unheated parking garage?
- answerHeat detector

Rooms or spaces with high ceilings may be subject to what condition during a fire? -
answerStratification

The most appropriate type of detection for a computer room is ? . - answerair-sampling
smoke detection

The horizontal spacing for a detector in a room with five minutes per air change is ? -
answer25.0'

, Temperatures lower than ? and higher than ? are not suitable for smoke detectors. -
answer32°F / 100°F

Smoke detectors are appropriate for rooms containing a swimming pool. - answerFalse
(Note: The humidity and corrosive nature of chlorine will cause nuisance alarms or
premature failure of the device.)

Concealed duct smoke detectors mounted more than ? above the floor must be
provided with a remote indicator. - answer10'

What are likely to create nuisance alarms for smoke detectors? - answerCigar smoke
Diesel exhaust
Humidity in excess of 93%

Duct smoke detectors are required to initiate a ? signal, unless the signal is transmitted
to a location that is not constantly attended. - answersupervisory

Radiant energy-sensing fire detectors are most appropriate for which of the following
applications? - answerGrain elevator loading area
Paint spray area
Woodworking facility

Ionization-type smoke detectors are slightly better at detecting smoke particles that
are ? and ? . - answer1 micron / smaller

What kind of detector is most appropriate for an atrium? - answerProjected-beam
smoke detector

Air-sampling smoke detectors usually send ? signals to the system control unit. -
answeralert, take action, and alarm

According to NFPA 90A, HVAC systems of ? or ? require supply-side smoke detection. -
answer2,000 cfm / greater

Where system (area) smoke detectors are used for door releasing service, they must be
? . - answerinstalled on both sides of the protected door

Which of the following is an example of a smoke control function? - answerStair
pressurization
door and shutter release
door unlocking

According to NFPA 90A, duct smoke detectors are required when the minimum air flow
exceeds ? . - answer2,000 cfm

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