True/False
Indicate whether the sentence or statement is true
or false.
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1.
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Fog
nozzles have traditionally operated at 100 psi, but new low pressure nozzles operating at 20 psi have
been approved.
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2.
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Application rate is the amount of foam needed to extinguish a fire. It is expressed in
gallons per minute per square foot.
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3.
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A
common foam proportioner is an eductor, which works on the venturi principle.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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4.
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A(n)
____ is water or another agent as it leaves the nozzle toward its target, usually the
fire. a. | fire
stream | d. | in-line
eductor | b. | discharge flow | e. | nozzle reaction | c. | nozzle
line | | | | |
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5.
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____
nozzles are capable of providing straight stream and spray patterns, which can by varied or adjusted
by the operator. a. | Solid
stream | d. | Wide
fog | b. | Fog | e. | None of the
above | c. | Combination | | | | |
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6.
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What
type of nozzle can be used to fight localized fires in basements when firefighters are unable to make
a direct attack on the fire? a. | a playpipe | d. | an industrial nozzle | b. | a piercing
nozzle | e. | a cellar
nozzle | c. | a water curtain nozzle | | | | |
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7.
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What
is the study of fluids at rest and in motion? a. | absolute pressure | d. | flow | b. | velocity | e. | friction | c. | hydraulics | | | | |
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8.
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____
is the amount of water flowing from the discharge side of the pump. a. | Nozzle
flow | d. | Discharge
flow | b. | Velocity
pressure | e. | Nozzle
reaction | c. | Pump flow | | | | |
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9.
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Solid
stream handlines can reach over ____ feet and master streams about ____ feet. a. | 50,
75 | c. | 100,
200 | b. | 50,
100 | d. | 70,
100 | | | | |
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10.
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Adverse conditions that affect fire streams are of two types: ____. a. | wind and time of
day | c. | elevation and
pressure | b. | man-made and natural | d. | hose size and hose type | | | | |
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