Term
What is the net pump discharge pressure the difference
between? |
|
Definition
Pump discharge pressure and the incoming pressure from the
hydrant |
|
|
Term
What is the last thing that is determined when computing
friction loss for siamesed hoselines of equal length? |
|
Definition
|
|
Term
| How much water can the piercing nozzle generally deliver? |
|
Definition
|
|
Term
Where can a flowmeter make it easier for the
driver/operator to ensure an adequate flow rate is being
achieved? |
|
Definition
|
|
Term
How far from the first gauge should the second gauge be
connected when 50-foot lengths of hose are being used in
the friction loss testing? |
|
Definition
|
|
Term
Which size hoseline would friction loss NOT be able to
calculated with the condensed "Q" formula? |
|
Definition
|
|
Term
Which type of pressure loss or gain is caused by hills and
aerial devices? |
|
Definition
|
|
Term
What is the minimum gpm when appliance pressure loss
becomes significant? |
|
Definition
|
|
Term
What are the most commonly used variable flow nozzles in
use today? |
|
Definition
|
|
Term
What is subtracted from the first two numbers of the gpm
flow to obtain a sufficiently accurate friction loss
figure per 100 feet of 2 1/2-inch using the GPM flowing
method? |
|
Definition
|
|
Term
What nozzle creates a fan-shaped stream and is intended to
protect combustible materials from the heat of an adjacent
fire? |
|
Definition
|
|
Term
What is the second step taken when determining the
friction loss in wyed hoselines of equal lengths? |
|
Definition
| Determine the friction loss in one of the wyed attack lines |
|
|
Term
What do electronic hydraulic calculators use to calculate
flow pressure requirements in most cases? |
|
Definition
| Average hose friction loss |
|
|
Term
How is hose length represented in the formula for
calculating friction loss? |
|
Definition
|
|
Term
Which is considered the most accurate method of
determining friction loss? |
|
Definition
|
|
Term
Which type of nozzle is needed if using a pitot tube for
friction loss testing? |
|
Definition
|
|
Term
How many in-line gauges are needed to perform friction
loss testing? |
|
Definition
|
|
Term
What is the first step that needs to be taken when
determining friction loss? |
|
Definition
| Obtain the friction loss coefficient |
|
|
Term
Where should you start when using the hand method of
calculating friction loss? |
|
Definition
|
|
Term
What is the most current formula for computing friction
loss? |
|
Definition
|
|
Term
Which type of heat is the water curtain nozzle effective
against? |
|
Definition
|
|
Term
What nozzle pressure are most constant flow nozzles
designed to operate at? |
|
Definition
|
|
Term
| Which direction can the ladder pipe be moved within? |
|
Definition
|
|
Term
Which type of monitor is permanently attached to the
apparatus? |
|
Definition
|
|
Term
What pressure should solid stream nozzles be operated at
when used on the end of handlines? |
|
Definition
|
|
Term
Which formula can be used to more easily determine the
elevation pressure in a multistory building? |
|
Definition
| EP=5psi(number of stories - 1) |
|
|
Term
What is the assumed friction loss for all master stream
appliances regardless of the flow? |
|
Definition
|
|
Term
What is the total pressure loss in a system with two
hoselines of unequal length based upon? |
|
Definition
| Highest loss of the two lines |
|
|
Term
What psi should be used when supplying a low-pressure fog
nozzle to ensure safety? |
|
Definition
|
|
Term
What part of the automatic nozzle moves automatically to
maintain approximately the same nozzle pressure when the
gallonage supplied to the automatic nozzle changes? |
|
Definition
|
|
Term
What is generally accepted as the minimum pressure reading
for the intake pressure gauge when performing relay
pumping? |
|
Definition
|
|
Term
What should be done to perform pressure loss calculations
when hoselines of different diameters are used to supply
the master stream? |
|
Definition
|
|
Term
What can be assumed if the firefighter communicates that
the water volume at the nozzle has suddenly diminished but
there is no reduction in the flowmeter reading? |
|
Definition
|
|
Term
How much pressure (psi) per foot of elevation does water
exert? |
|
Definition
|
|
Term
What divisor should be used when determining the total
number of hundreds of gpm flowing in the supply line to
the wye? |
|
Definition
|
|
Term
What is the total pressure loss in a system with two
hoselines of unequal length based upon? |
|
Definition
| Highest loss of the two lines |
|
|
Term
NFPA 1901, Standard for Automotive Fire Apparatus allows
flowmeters to be used instead of pressure gauges on all
discharges __________ inches in diameter. |
|
Definition
|
|
Term
| In the fire service a water thief is __________. |
|
Definition
|
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