Fire Alarm Systems Are Well-defined

15 Questions | Total Attempts: 154

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Fire Alarm Systems Are Well-defined

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Questions and Answers
  • 1. 
    1.   NFPA 72, 2016 no longer requires a basement smoke detector in a residence unless there is an intervening door between levels.
    • A. 

      True

    • B. 

      False

  • 2. 
    2.   The region of relatively uniform temperature and smoke density in a buoyant plume diverges at an angle of approximately _____ degrees.
    • A. 

      A. 15

    • B. 

      B. 22

    • C. 

      C. 31

    • D. 

      D. 66

  • 3. 
    3.   The so called “three foot rule” relates to _____.
    • A. 

      A. the requirement to address the effects of HVAC systems on the performance of smoke detectors

    • B. 

      B. the placement of pull stations from an exit discharge leading to an exit stairway

    • C. 

      C. the placement of beam smoke detectors away from the highest point on the ceiling which is at least over 25 feet in height

    • D. 

      D. the maximum distance permissible for detection necessary for under wing protection of aircraft hangers

  • 4. 
    4. Smoke detectors shall not be placed within 12 inches of the ceiling on the wall or within 4 inches of the wall when placed on the ceiling.
    • A. 

      True

    • B. 

      False

  • 5. 
    5.   Working smoke alarms cut the risk of dying in a reported home structure by _____ percent.
    • A. 

      A. 20

    • B. 

      B. 40

    • C. 

      C. 50

    • D. 

      D. 75

  • 6. 
    6.   The use of _____ ft./min flow velocity in the UL 268 and 217 smoke detector sensitivity tests for spot-type smoke detectors has led to the evolution of spot-type smoke detectors  that are optimized for that flow velocity.
    • A. 

      A. 15

    • B. 

      B. 30

    • C. 

      C. 45

    • D. 

      D. 60

  • 7. 
    7.   Flame detector sensitivity is usually rated by NRTLs by using a fire of what size using regular grade, unleaded gasoline?
    • A. 

      A. 1.0 square foot

    • B. 

      B. 3 square feet

    • C. 

      C. A pan that is 3 in. wide x 3 in. long x 6 in. deep

    • D. 

      D. Any of the above

  • 8. 
    8.   Planckian emissions are _____.
    • A. 

      A. generated by gasoline fires

    • B. 

      B. generated by Class E fires

    • C. 

      C. the result of the thermal energy in the fuel mass

    • D. 

      D. produced by any combustible solid

  • 9. 
    9.   The portion of the spectrum in which radiant energy-sensing detectors detect ultraviolet wavelengths is _____ microns.
    • A. 

      A. 0.1 to 0.35

    • B. 

      B. 0.35 to 0.75

    • C. 

      C. 0.75 to 220

    • D. 

      D. 3.5 to 7.5

  • 10. 
    10.  A Class A system is one that _____.
    • A. 

      A. the AHJ designated as such after a final inspection with no violations

    • B. 

      B. insurance companies require in order to provide a discount on fire detection policies

    • C. 

      C. utilizes a certain wiring scheme that is outlined in the Code

    • D. 

      D. is installed only in Class A office occupancies as outlined in NFPA 101, The Life Safety Code.

  • 11. 
    11.  The term “immediately” used within the context of the Code is intended to mean _____.
    • A. 

      A. this moment without delay

    • B. 

      B. as quickly as other tasks permit you to take action safety

    • C. 

      C. without unreasonable delay

    • D. 

      D. the code doesn’t make this clear; it’s up to the AHJ to determine

  • 12. 
    12.  According to section 26.2.2.1, if an alarm signal cannot be reliably confirmed as a nuisance alarm, then it should not be immediately retransmitted unless such determination can be made.
    • A. 

      True

    • B. 

      False

  • 13. 
    13.  The phrase used in 26.2.6.1, “notified in writing,” includes correspondence that can be verified upon request but still does not permit email communications.
    • A. 

      True

    • B. 

      False

  • 14. 
    14.  A central station’s routine handling of a supervisory signal until the initiation of communications with a person designated by the subscriber should take _____.
    • A. 

      A. a maximum of four minutes

    • B. 

      B.    no longer than 90 seconds

    • C. 

      C. a reasonable amount of time without exercising unnecessary delay

    • D. 

      D. as little time as possible

  • 15. 
    1    5.   The term “dwelling unit” is defined and applies to occupancies other than one- and two-family dwellings. These are defined seperately.
    • A. 

      True

    • B. 

      False

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