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Pumping and Aerial Apparatus operator: Chapter #5 updated exam
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Pumping and Aerial Apparatusoperator: Chapter #5 updated
exam
above sea level, atmospheric pressure decreases
approximately ___ psi for every _____ feet - answer
✅✅0.5 psi for every 1,000 feet
almost universally, private water supply systems
maintain what? - answer ✅✅separate piping for fire
protection and domestic\industrial services.
Altitude is... - answer ✅✅the relationship of an
object in relation to sea level
another common issue causing friction loss inside of
pipe is the... - answer ✅✅sedimentation that settles
out of water.
,Anything that affects the movement of water has
the... - answer ✅✅potential to cause additional
friction loss
control valves in public water distribution systems
are generally... - answer ✅✅gate valves
Elevation refers to... - answer ✅✅the center line of
the pump or the bottom of a static water supply
source above or below ground level.
flow is proportional to... - answer ✅✅velocity
Flow pressure will always be greatest... - answer
✅✅near the source of supply
Flow pressure will always be the least when it is... -
answer ✅✅farthest from the source of supply
Force - answer ✅✅simple measure of weight,
usually expressed in pounds or kilograms.
, Gate valves may be of what two types? - answer
✅✅rising Stone or the non-rising stem type
Head - answer ✅✅Alternate term for pressure,
especially due to elevation. For every 1 foot increase
in elevation, 0.434 psi is gained.
How can water extinguish fires? - answer ✅✅by
cooling or absorbing heat from the fire, as well as
smothering (excluding oxygen) from fires
How much pressure is required to reduce the volume
of water by 1%? - answer ✅✅30,000psi
if there is any question about the reliability of a
private water supply system or its ability to provide
an adequate amount of water for a large scale
firefighting operation, the fire department should
make arrangements to... - answer ✅✅augment the
private water supply
If you pass the critical velocity limits of a hose line it
becomes necessary to... - answer ✅✅use parallel
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