_____ consists of a small return (pass) water line linked from the release aspect of the pump
again to the intake side of the pump - ANS-around-the-pump proportioners
The distinction in pressure among the hydrant's incoming stress and the pump discharge strain
is the ANS-internet pump discharge pressure. ANS-stress is a pressure-in keeping with-unit
place with a force size in kilos and a place dimension in square inches. ANS-encrustation is
corrosion or mineral deposits at the indoors floor of a water distribution device's piping and
components. A _____ distribution gadget is a network of water mains which offers a circulating
feed - ANS-grid
A ANS-compound gauge is calibrated to examine superb and poor stress. A _____ shows float
in GPMs - ANS-flowmeter
a _____ valve is used to relieve stress in hose strains after the release gates are closed -
ANS-drain
a "0" psi studying on maximum pressure gauges is virtually _________ psi pressure at sea
degree - ANS-14.7
a 2 half of inch fog nozzle flowing 225 gpms at a pressure of one hundred psi will have a
response of about _____ lbs - ANS-113
a tool used to signify water pressure in pounds per square inch is a ____ gauge -
ANS-pressure
A fire pump is rated and evaluated in accordance with ANS-underwriter's laboratory's
specifications. A hydrant with the largest capability might be one that is linked to a : -
ANS-number one feeder
a ladder pipe with a 2 inch tip at 80 psi nozzle pressure may have about ______ pounds of
nozzle response - ANS-500
A master move is any fireplace circulate that is too big to be controlled manually. A method for
figuring out reliable raise for a fire branch pump is every _____ of indicated vacuum, water will
rise _______ - ANS-inch, one foot
What is the pressure in psi at the base of a one-rectangular-inch column containing water to a
top of 100 feet? - ANS-forty three.4 a company of the extinguishing agent drift and pressure
devoted to hearth safety is the: - ANS-hearth pump
a pump and roll machine: - ANS-is a system that permits the equipment to be pushed at the
same time as discharging water
a test this is conducted the usage of NFPA 1911 as soon as a year is called a _____ take a
look at - ANS-carrier/performance
after flowing a three hundred gymnasium line, a 6 percent drop became found out on the
incoming stress. Based totally on this, ______ extra strains of the identical drift can be
introduced - ANS-3
all gauges used for service checks ought to were calibrated inside ____ days - ANS-60
Before setting the device into pumping mode, always make certain the _____ is ready -
ANS-parking brake an auxiliary cooling tool does what: - ANS-cools engine when the apparatus
pump is engaged
, an engine with a 750 gallon booster tank is flowing two 1.75handlines every a hundred and fifty
gpms. How long will the booster tank support operations? - ANS-2.Five mins
an operator must prime a pump when running: - ANS-from a static supply
equipment prepared with water tanks larger than 500 gallons need to provide a tank-to-pump
flow charge of _____ gpms - ANS-500
apparatus prepared with water tanks of 500 gallons or less should provide tank to pump drift
price of _____ gpms - ANS-250
Apparatus have to no longer be driven in opposition to the ordinary waft of visitors on limited
get right of entry to highways and turnpikes except: - ANS-the motive force/operator has been
given an all clear from fireplace police units already on scene
approximately how a good deal water might be delivered from a 1 1/four inch clean bore nozzle
if nozzle stress is 50 psi - ANS-328 gpms
as drift decreases, strain will ______ supplied pump velocity stays consistent - ANS-growth
at a operating fireplace which apparatus has the very best priority for position? - ANS-aerial
apparatus
to be had go with the flow from hydrants is predicted by way of determining the percentage
drop between static and ______ strain - ANS-residual
centrifigual fireplace pumps may additionally make use of: - ANS-tremendous consumption
pressures
centrifugal hearth pumps are particularly used in the fireplace carrier today due to the fact: -
ANS-of their flexibility and flexibility
all through a pump potential check, a pumper ought to deliver _____ percentage of its rated
capacity at 250 psi pump stress for 10 minutes - ANS-50
each fire pump impeller in a housing is generally called a: - ANS-stage
flowmeters must be accurate to a tolerance of _____ percentage - ANS-plus minus three
percent
friction loss is usually expressed in phrases of: - ANS-pounds in line with rectangular inch in
keeping with one hundred' of hose
if the friction loss in three hundred ' of hose is 70 psi, what will the friction loss be in 450 ft of the
identical length hose, flowing the identical amount of water? - ANS-105 psi
if the pump has a rated capability of 750 health club or greater, the fire apparatus have to be
subjected to an overload check lasting at least how lengthy? - ANS-five mins
in a water distribution grid, the _____ materials character hydrants and customers -
ANS-distributor
in drafting ops, pumping capability decreases while: - ANS-atmospheric pressure decreases
it isn't endorsed exercise to lessen incoming water supply stress beneath _____ psi - ANS-20
understanding what's happening across the equipment at the same time as driving is: -
ANS-situational focus
nozzles that deliver as much as 350 gpms are: - ANS-handlines
strain manage gadgets need to operate inside ______ with an boom of 30 psi - ANS-three-10
seconds
right equipment upkeep includes visually checking the tank water degree how often? -
ANS-each day
pumpers need to carry at the very least _____ gpms - ANS-three hundred