Everything You Need to Know About 4B- FF1 Chapter 4 Test- Fire dynamics|75 Revision Questions With Correct Answers
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Course
4B- FF1
Institution
4B- FF1
Which type of electrical heating occurs when the current flowing through a conductor exceeds its design limits? - ️️Overcurrent or overload
What may occur if water is added to a burning liquid that is less dense than water? - ️️The water may disperse the burning liquid instead of extinguis...
Which type of electrical heating occurs when the current
flowing through a conductor exceeds its design limits? -
✔ ✔ Overcurrent or overload
What may occur if water is added to a burning liquid that
is less dense than water? - ✔ ✔ The water may
disperse the burning liquid instead of extinguishing it
What may occur in an oxidation reaction when the heat
generated exceeds the heat being lost? - ✔ ✔
Spontaneous ignition
What occurs during flashover? - ✔ ✔ The volume of
burning gases can increase to fill the room's entire volume
and extend out of any openings from the room
What occurs when a mixture of fuel and oxygen
encounter an external head source with sufficient heat or
thermal energy to start the combustion reaction? - ✔ ✔
Piloted ignition
, What occurs when a mixture of unburned fuel gases and
oxygen come in contact with an ignition source? - ✔ ✔
Smoke explosion
What occurs when gas is compressed? - ✔ ✔ Heat is
generated
What provides the best indicators of structural integrity?
- ✔ ✔ Information gathered at scene
When solid fuels are heated, they begin to ____ and release
fuel gases and vapors - ✔ ✔ Pyrolize
Where might firefighters be most likely to encounter
inoperative standpipes and sprinkler systems: - ✔ ✔
Buildings under demolition
Which action will transition a compartment fire in a
modern structure from ventilation-limited to fuel-
limited? - ✔ ✔ Extinguishing some of the fuel
Which element of the fire tetrahedron is included to
explaing laming (gas-phase) combustion - ✔ ✔
Chemical chain reaction
Which heat transfer mechanism is dependent on several
factors including the turbulence and velocity of moving
gases? - ✔ ✔ Convection
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