Chapter 8 - Fireground Hydraulic Calculations Flashcards
The number displayed by a flowmeter reflects water pressure that will be discharged through the nozzle if the hoseline is:
functioning at its rated capacity.
page 282
The condensed Q method formula cannot be used with _____ measurements
metric
page 287
When making initial calculations for a customized pump chart, ensure the length of the wyed hoseline layout is the distance between
the pumper and they wye.
page 285
The gpm flowing method is not applicable to the _____ system of measurement.
metric
page 288
With the proper calibration, a flowmeter should be accurate to a tolerance of plus or minus:
3 percent
page 282
Which type of flowmeter has only one simple moving part and therefore tends to require little maintenance?
Spring probe
page 282
When a line is shut down during standpipe operations and the driver/operator is operating an apparatus equipped with a flowmeter, the driver/operator should:
lower the pressure accordingly.
page 283
What effect will a kink or a partially closed valve in the hose layout have on the flowmeter?
Will cause the flowmeter to register a change in the meter’s reading
page 283
Which is most likely to be the cause if a driver/operator receives a message from an attack team that the volume of water at the nozzle has suddenly decreased without a corresponding change at the flowmeter?
A hoseline may have burst.
page 283
pump charts contain information specific to:
a jurisdiction’s equipment and common hose layout operations.
page 284
Each discharge equipped with a flowmeter must have a digital readout display mounted within:
6 inches (150 mm) of the control valve for that discharge.
page 282
flowmeters are useful in relay pumping operations because the driver/operator may feed a supply line without having to know:
the volume of water flowing from the receiving pumper.
See page 283
Which type of flowmeter is mounted at the top of a straight section of discharge pipe so that only a small portion of the device extends into the waterway?
Paddlewheel
page 282
The condensed Q formula FL = Q2 is used with:
3-inch hose.
page 287
For electronic hydraulic calculators, once variables have been entered, the calculator applies ____________________ to arrive at pump discharge pressure.
page 284
preprogrammed formulas
