Exam (elaborations)
Ch. 14: Water Supply Questions and Answers 2024
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Ch. 14: Water Supply
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Ch. 14: Water SupplyA jet siphon is used for which application
a. Expediting discharge from a mobile water supply apparatus
b. Transferring water between portable tanks
c. Priming a dry pump
d. Exhausting air from hard suction - answerb. Transferring water between portable
tanks
According to the NFPA, what is the minimum distance between the center of a fire
hydrant outlet and the finished grade of the ground around the hydrant
a. 24"
b. 12"
c. 18"
d. 30" - answerc. 18"
Another term for head pressure is __________ pressure
a. Elevation
b. Flow
c. Static
d. Residual - answera. Elevation
Friction loss is _____ proportional to the length of a hose
a. Variably
b. Inversely
c. Indirectly
d. Directly - answerd. Directly
In a well-designed water distribution system, which type of pattern do the water mains
follow?
a. Loop
b. Branched
c. Parallel
d. Grid - answerd. Grid
In areas of the western US where aircraft are used to fight wildland fires, which term is
used for automobile water supply apparatus?
a. Tender
b. Water truck
c. Tanker
d. Tank truck - answera. Tender
On a wet-barrel hydrant, where is the valve located?
, a. On each outlet
b. At the base
c. In the bonnet
d. In the barrel - answera. On each outlet
Portable pumps can deliver a maximum of
a. 750 gpm
b. 250 gpm
c. 1000 gpm
d. 500 gpm - answerd. 500 gpm
The flow or quantity of water moving is usually measured in
a. Gallons per minute
b. Pounds per square inch
c. Cubic feet per minute
d. Joules - answera. Gallons per minute
The pressure in a system when no water is flowing is called _______ pressure
a. Static
b. Residual
c. Flow
d. Operating - answera. Static
The pressure remaining in a water distribution system when water is flowing is the
_______ pressure
a. Residual
b. Static
c. Flow
d. Operating - answera. Residual
The quantity of water that is being moved through a pipe or hose is termed the
a. Steam
b. Throughput
c. Flow
d. Pressure - answerc. Flow
What is hard suction hose most commonly used for?
a. Transferring water from a pressurized source to a pump
b. Filling a portable tank
c. Drafting from a static water source
d. Relay pumping - answerc. Drafting from a static water source
What is the decrease in pressure that occurs as water moves through a hose
a. Dynamic loss
b. Friction loss
c. Residual pressure
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