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Fire Inspector Chapter 3 Questions with solutions
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Fire Inspector Chapter 3
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Fire Inspector Chapter 3Which type of ignition occurs when a mixture of fuel and oxygen encounter an external
heat source with sufficient heat or thermal energy to start the combustion process? (79)
- answerPiloted ignition
Which type of heat transfer travels through vacuums and air spaces? (87) -
answerRadiation
Which of the following thermal properties of a compartment maintains temperature by
absorbing and releasing large amounts of heat slowly? (102) - answerRetention
Which source of heat is generated by friction or compression? (82) - answerMechanical
energy
Which stage occurs when the oxygen concentration falls to the point that flaming
combustion is diminished? (108) - answerDecay
Which of the following refers to unintended resistance heating? (81) -
answerOvercurrent or overload
Which type of heat transfer occurs when a material is heated as a result of direct
contact with a heat source? (83) - answerConduction
Which of the following statements about fires originating in upper levels of a building is
MOST accurate? (101) - answerThey generally extend downward much more slowly.
Which of the following statements about thermal layering is MOST accurate? (104) -
answerGenerally, the hottest gases tend to be in the upper layers.
What stage occurs as the fire consumes the available fuel in the compartment and the
heat release rate begins to decline? (108) - answerDecay
Which element was added to the basic fire model to create the fire tetrahedron? (76) -
answerUninhibited chemical reaction
Materials that burn readily in oxygen-enriched atmospheres: (94) - answermay not burn
in normal oxygen levels.
Which of the following refers to energy released per unit of time as a fuel burns? (88) -
answerHeat release rate
, Which of the following statements about combustible materials with high surface-to-
mass ratios is MOST accurate? (99) - answerThey are easily ignited and burn quickly.
What is the minimum concentration of fuel vapor and air that supports combustion? (94)
- answerLower flammable limit
Materials that absorb heat, but do not contribute fuel in the combustible reaction are
known as: (87) - answerpassive agents.
Which is an example of a hydrocarbon-based fuel? (87) - answerPlastics
Which of the following statements about fires that develop beyond the incipient stage is
MOST accurate? (107) - answerThey become ventilation controlled.
Which of the following would extinguish a fire under the simplest model of fire behavior?
(76) - answerRemoval of oxygen
What is the temperature at which sufficient vapors are generated to sustain the
combustion reaction? (90) - answerFire point
Energy possessed by a moving object is known as: (78) - answerkinetic energy.
Air contains approximately: (92) - answer21 percent oxygen.
Which of the following statements about a physical change is MOST accurate? (74) -
answerThe substance remains chemically the same but changes in size, shape, or
appearance.
The most common source of heat in combustion reactions is: (80) - answerchemical
energy.
All other factors being equal, a fire in a large compartment will develop: (101) -
answermore slowly than one in a small compartment.
Which of the following is known as the reducing agent in a combustion reaction? (87) -
answerFuel
Which of the following refers to a high-temperature luminous electric discharge across a
gap or through a medium such as charred insulation? (81) - answerArcing
In a self-sustained chemical reaction, the combustion of methane produces the toxic
gases carbon monoxide and: (96) - answerformaldehyde
In solid fuels, what must occur to generate the flammable vapors required for
combustion? (91) - answerPyrolysis
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