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Branddynamik 2 S7002B HT22 > Quiz for fire detection and alarm system > Flashcards

Quiz for fire detection and alarm system Flashcards

1
Q
  1. The built-in measures that aid in providing fire safety in buildings are called
A

Passive system

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2
Q
  1. Which of the following cannot be used to extinguish electrical fires:
    a. Halon extinguishers
    b. CO2 extinguishers
    c. Dry chemical power extinguishers
    d. None of the above
A

None of the above

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3
Q
  1. Which type of fire extinguisher is bad for the ozone layer?
A

Halon extinguishers

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4
Q
  1. What are some properties of brandfilt?
A

Has fire retardants and does not allow air to pass

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5
Q
  1. What type of fire extinguisher is not suitable for class A fires (Paper, textiles, wood, most plastics & rubber)?
A

CO2 extinguisher

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6
Q
  1. Fire hose reels are used to fires that are:
A

For big and small in its growth stage

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7
Q
  1. What are the seven layers of fire safety in buildings?
A

Prevention>detection>early-suppression>evacuation>compartmentation>structural safety>fire fighting

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8
Q
  1. Why sound alarm is important?
A

It enables fire safety for people who are sleeping

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9
Q
  1. Which Swedish code has rules for alarm system with spoken language?
A

SBF 502:1

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10
Q
  1. For ‘Larmlagring’, how a staff takes action if rescue service alarm light is on and upon investigation, he/she/it does not find any burning fire?
A

Resets alarm

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11
Q
  1. MCP in alarm system stands for
A

Manual call Point

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12
Q
  1. What are fire signatures that are used by detectors to detect fire?
A

Measurable changes in environment caused by fire

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13
Q
  1. Which of the following is not a fire signature?
    a. Temperature
    b. Energy transfer
    c. Heat
    d. None of the above
A

None of the above

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14
Q
  1. Which is the slowest fire signature(s) amongst the list below?
A

Aerosols and temperature

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15
Q
  1. What might cause fire gases not to reach the ceiling fully?
    a. Fires from embers
    b. Small fires
    c. Ventilation system
    d. All the above
A

All the above

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16
Q
  1. In a fire, radiation is caused by….
A

Soot

17
Q
  1. Why changes in the concentration of CO are easy to detect than that of CO2?
A

CO is only 0.00% in the atmosphere and hence small changes can be easily detected

18
Q
  1. What gas is formed when poly(vinyl chloride) burns?
A

Hydrogen chloride

19
Q
  1. Most detectors can detect aerosols in what size range?
A

0.1 – 2 µm

20
Q
  1. Which size of aerosols cause hindrance in proper evacuation?
A

> 0.3 µm

21
Q
  1. Which kind of fire detectors should be avoided in the kitchen?
A

Ionisation smoke detectors

22
Q
  1. Which detectors uses a fan to retrieve air out of the monitored space?
A

Sampling system detector

23
Q
  1. Which detector can be used only if there is a proper way to see the monitored object?
A

Flame detector

24
Q
  1. Which detector can be used for fires in the lawn of a house?
A

Flame detector

25
Q
  1. Single frequency IR detectors have a wavelength range of:
A

4.3 µm

26
Q
  1. Johannes has intentionally started a fire in the classroom using magnesium he found from the chemistry lab in the C hus. What type of detector will not detect this fire?
A

Smoke detector and IR detector

27
Q
  1. Evelina has just eaten a big pizza with her hands. Then without washing her hands, she went on to install a new type of fire detector. However, Jennifer, again started a fire, but this time using propane. Everyone in the room, which contains the fire, is in danger if this type of detector was installed by Evelina:
A

UV detector

28
Q
  1. What is the range of ppm that gas detectors can usually detect?
A

10 – 100 ppm

29
Q
  1. What element’s isotope is used in smoke detectors?
A

Americium-241

30
Q
  1. What smoke detector uses a light trap?
A

Optical light scattering detector

Branddynamik 2 S7002B HT22 (9 decks)

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