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mobile water supply Questions and Answers 100% Solved
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Exam of 5 pages for the course mobile water supply at mobile water supply (mobile water supply)
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Chapter 16 Water SupplyA dry hydrant provides access to a - answer static water source
A hose adaptor connects two hose sections of - answer equal diameter but differing
threads
A pilot guage is used to determine __ pressure - answerflow
A short fold in a supply hose load that prevents a coupling from flipping around when
the hose is being laid out is a - answerDutchman
A soft suction hose is used to connect a pumper to a - answerHydrant
A typical number fire engine carries __ of supply hose - answer750 feet to 1250ft (228
to 380 m)
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 - answer18"
(45cm)
An engine lays hose from a water source to the fire scene in a __ lay - answerforward
Another term for head pressure is __ pressure - answerElevation
Couplings are tightened and loosened with a __ wrench - answerspanner
During annual testing, attack hose is tested at what pressure - answer300 psi
(2068kPa)
During annual testing, supply hose is tested at __ psi (1379 kPa) - answer200
During hose testing, pressure is maintained for __ minutes - answer5
Fire fighters may need to hold on to the __ while filling a self-expanding portable tank -
answercollar
Fire hydrants should be inspected at least once every __ months - answer12
Hose that is at least 3 1/2" (88mm) in diameter is considered __ diameter - answerlarge
, How can you determine that a dry-barrel hydrant is still draining - answerplace a hand
over an outlet and feel for suction
How close must a fire engine get to a static water source to be able directly from it
through hard suction hose - answer20 ft (6m)
How does a doughnut hose roll differ from a straight hose roll - answerBoth couplings
are on th outside
How many gallons per minute can a tanker shuttle operation deliver without interruption
- answerseveral hundred
In a __ lay, the hose is laid out from the fire to the hydrant - answerreverse
In a jacketed fire hose, which function does the outer jacket serve - answerIt adds
strength that allows the hose to withstand water pressure
In a well-designed water distribution system, which type of pattern do the water mains
follow - answerGrid
In general , mobile water supply apparatus carry - answer1000 to 3500 gal (3785 to
13249 L)
Portable pumps can deliver a maximum of - answer500 gpm (1893 lpm)
Pressure in a water distribution system during average consumption is __ pressure -
answernormal operating
The end of the hose bed closet to the apparatus cab is the - answerfront
The flow or quantity of water moving is measured in - answergallons per minute (liters
per minute)
The most likely cause of leaking between two joined couplings is a damaged or missing
- answerSwivel gasket
The NFPA recommends color-coding hydrants to indicate - answeravailable flow
The pipes that deliver water form the treatment facility for distribution are - answermains
The pipes that deliver water to users and hydrants on individual streets are -
answerdistributors
The pressure in a system when no water is flowing is called __ pressure - answerstatic
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