Acting Engineer Test Flashcards
According to NFPA 1901, fire
department pumpers should have a
minimum pump capacity of:
750 gpm
After the driver/operator perceives the need to stop the vehicle, the distance the apparatus travels while the driver/operator transfers his or her foot from the accelerator to the break pedal is:
Reaction Distance
All aerial device movement should be
slow, smooth, and controlled because
of the:
force being
generated.
Apparatus equipped with a diesel particulate filter (DPF) will have:
very clean
exhaust emissions
and no black
smoke
Apparatus equipped with pressure
governors should be set in:
Pressure mode when acting as the attack pumper and RPM mode while working as a relay pumper.
An apparatus that is equipped with a fire pump,
water tank, and hose, in addition to an aerial
device and ground ladders, is BEST referred to
as a:
quint
The component in a load management system
that turns on various lights at specified
intervals so the electrical load for all devices
does not occur at the same time is called the:
load sequencer
The current formula for friction loss accounts
for the diameter of the hose, the volume of
water flowing and the:
length of the hose layout
The deck gun mounted to the engine has a 1
1/2 inch tip. What is the pump discharge
pressure?
90
During pumping operations driver/operators
should maintain a residual pressure on the
master intake gauge:
of at least 20 psi
During response to a possible hazardous
material incident, the apparatus should
approach from:
uphill and upwind
For a multistage centrifugal fire pump,
switching from volume to pressure.
can result in immediate doubling of previous discharge pressure.
For which of the following is a nozzle
pressure of 80 psi a safe and efficient
nozzle pressure?
Solid stream
nozzle (master
stream)
Generally, the maximum flow for a
handline is 350 gpm (1400L/min)
because greater flows will:
produce a nozzle reaction that is difficult or dangerous for firefighters to handle
How is the pumper position to supply
a fire department connection best
determined?
Through pre-
incident planning
If 300 gpm is flowing from a nozzle,
what is the total pressure loss due to
friction for 400 feet of 2 1/2 inch
hose?
72
If a sprinkler system is to be supplied at the fire department connections and no specific information is available, the general guideline is to discharge:
150 psi into the FDC
If discharge flow volume is increased too
much when operating from the
pressurized water source:
it may lead to
cavitation of the
pump.
If the building has been exposed to
severe fire conditions, it is MOST
advisable to park:
outside of
the buildings
collapse zone.
If water is not flowing for an extended
period of time during fire attack, why
might a circulator, bypass, or booster
cooling valve be opened on a pump?
To prevent
the pump from
overheating
In general, pumps supplying a relay
operation or master stream are used to
supply large amounts of water and
therefore require:
use of a parallel (volume) setting of the transfer valve.
In most jurisdictions, when civilian drivers
encounter emergency vehicles
responding with warning lights activated
and audible devices sounding they must:
pull to the right, stop, clear intersections, and remain motionless.
In order for apparatus to come to a
complete stop on snow and ice, it may
take:
3 to 15 times greater distance than it does on dry pavement.
In order to produce fire fighting foam,
what three items must be educated or
injected in correct ratios?
Foam
concentrate,
water, air
In the “inside/outside” method when would
an attack pumper be positioned on the
side of the street closest to the building
and the aerial apparatus be placed
outboard of the pumper?
If building
is less than
five floors tall
Newer operators should avoid full-speed
operations until:
they are very familiar with the operations of the aerial device.
Nozzle reaction occurs as water is
discharged from a nozzle a given pressure
and:
a counterforce pushes back against firefighters operating the hoseline
On an aerial apparatus, which of the
following refers to the angle formed by level
ground and a line from the point where front
tries touch the ground to the lowest
projection at the front of the apparatus?
Angle of
approach
The operation of a centrifugal pump is based
on the principle that a rapidly revolving disk
tends to throw water introduced at its center:
toward
the outer
edge of the
disk.
Pressure for standpipes operations for fire
departments may be:
labeled on the faceplate of the fire department connection
Solid stream nozzels on handlines should be
operated at a maximum of:
50 psi
nozzle
pressure
A solid stream nozzle produces a fire stream
that has a:
tight stream and little spray or shower effect
Total pressure loss includes friction loss and
elevation pressure loss combined with the
loss associated with:
appliances
Using an aerial device as an
exterior standpipe to upper floors
is a tactic that:
can eliminate
difficult hose lays up
interior stairwells.
Weight carried on most apparatus
can contribute to:
Skidding or possible
rollover due to lateral
weight transfer
What agency in the United States
establishes basic requirements for
licensing a driver?
Federal Department
of Transportation
(DOT)
What hundred block east is
Detroit?
2800
What hundred block is Boulder St?
2600
What hundred block is Mansfield?
3900
What hundred block is Market St.?
1400
What hundred block is Yosemite?
8900
What hundred block north is Albrook Dr at
Peoria?
4700
What hundred block south is Cedar?
200
What hundred block west is Eliot?
2900
What hundred block west is Fox?
600
What is the pump discharge pressure for 300
feet of 1 3/4 hose with a 15/16-inch smooth bore
nozzle?
209
What is the pump discharge pressure for a
multiversal master stream with a 2-inch tip and
two 3-inch lines, 400 feet in length flowing into
it?
202
What location is generally considered the safest
position for apparatus placement should a
structure collapse occur?
corners of the structure
What should a driver/operator do
immediately upon indication that the
water supply or pumping ability may
be unattainable or interrupted?
Notify officer
or Incident
Commander
What street is 1200 south?
Arizona
When an emergency medical incident
requires a driver/operator to position
apparatus in a street or highway:
use the vehicle as a shield between work area and oncoming traffic
When a pumper is connected to a
hydrant and not discharging water,
pressure shown on intake gauge is:
static pressure
When a pumper is discharging water
the intake gauge displays:
residual pressure
When examining tire condition,
driver/operators should check:
excessive wear on the sidewalls
When giving a hand signal, the
spotter crosses both forearms
into a large X. This means:
stop the apparatus
When more than one
emergency vehicle is
responding along the same
route, the should travel:
at least 300 to 500
feet (90 to 150m) apart.
When performing a walk-around
inspection, the driver/operator
begins inspection at the:
Driver’s door on the
cab and works around
apparatus in a clockwise
pattern.
When pinnable waterways are
operated in the rescue mode,
the master stream nozzle is;
one aerial section
lower than the tip.
When possible, the
driver/operator should position
an aerial apparatus at the:
corner of the building
When pumping in the parallel
(Volume) position:
each of the impellers
takes water from a
source and delivers it to
the discharge.
When pumping in the parallel
(Volume) position:
each of the impellers
takes water from a
source and delivers it to
the discharge.
When should the mirrors be
adjusted on an apparatus?
Any time driving
responsibilities change
from one individual to
another.
When spotting an apparatus at a
structure fire incident,
driver/operators should be the
MOST aware of:
falling debris
When stabilizing an aerial
apparatus:
never set up on
slopes exceeding the
manufacturer’s
recommendations.
When strobe lights (emitters)
mounted on apparatus are used
to activate sensors in traffic
lights, the signal:
Cause a green light for the fire apparatus direction of travel, and a red light in all other directions.
When would be the BEST time to develop apparatus placement procedures involving access to occupancies and overhead obstructions?
During preincident
planning
Which consideration would MOST
likely be taken into account when
positioning an aerial apparatus
fire pump?
Reach of the aerial
device
Which of the following actions
would MOST likely be considered
reckless when driving an
apparatus?
Failing to yield to
other responding
emergency vehicles
Which of the following BEST
describes the function of a pressure
governor?
Regulates engine
speed to match
pump discharge
pressure.
Which of the following BEST
describes the main feature of relief
valves?
Ability to relieve
excessive pressure
within the pump
discharge
Which of the following BEST
describes the process of climbing an
aerial device and device operations?
Personnel may
climb once device
is positioned.
Which of the following BEST
determines the most advantageous
position for an attack pumper?
size-up
Which of the following can BEST
assist the driver/operator when
operating an aerial device in high
wind conditions?
load chart
Which of the following can occur when
pumping at a low residual pressure while
being supplied by other apparatus?
Cavitation of
the pump
Which of the following customary
formulas would be used to conduct
elevation pressure loss calculations on
the fireground?
0.5 x Height
in feet
Which of the following displays engine
speed in revolution per minute?
Tachometer
Which of the following factors is MOST
likely to affect the degree of expansion
in foam solution?
Rate of
application
Which of the following factors MUST be
balanced against positioning an
apparatus at a safe distance from the
structure?
The distance
of the fire
stream to reach
the target.
Which of the following is a
characteristic of master
stream nozzles?
Offer ability to operate at
a greater distance from the
fire
Which of the following is a
function of antilock breaking
systems (ABS)?
Assist the driver/operator in keeping apparatus in a straight trajectory during heavy or emergency breaking
Which of the following is a
main factor that influences a
centrifugal fire pump’s
discharge pressure?
Pressure of water when it
enters pump from a
pressurized source
Which of the following is a
main use for aerial ladders?
Gaining access to upper
levels of an emergency
scene.
Which of the following is one of the three
main portions of an aerial ladder to which
firefighters and driver/operators commonly
refer?
rungs
Which of the following is the correct
customary formula for determining pump
discharge pressure?
Nozzle pressure plus total pressure loss
Which of the following is the formula for
friction loss?
FL =
CQ2L
Which of the following is the MOST likely
reason for a locked wheel skid?
Braking
too hard at
high speed
Which of the following is the primary reason
for daily pretrip inspections?
Minimize
mechanical
failure
Which of the following is the
purpose of a four-way hydrant
valve in making a lay?
Allows a second arriving pumper to connect without interrupting the flow of water to the original supply line
Which of the following must all riders be doing, in addition to being seated within the cab or body, before the apparatus is put into motion?
Wearing seat betls
Which of the following refers to
any pressure less than
atmospheric pressure?
vacuum
Which of the following should be
done to prevent water hammer?
Close all valves
slowly.
Which of the following
statement about rescue tools is
MOST accurate?
Power systems may
be portable or apparatus
mounted.
Which of the following statements
about checking fluid levels is MOST
accurate?
Never rely solely on warning lights or gauges; all fluid levels should be inspected.
Which of the following types of apparatus is preferred when placing one or more firefighters at the position where the elevated master stream is going to be deployed?
Elevating
platform
Which of the following would MOST
likely be exempt when emergency
vehicles have their audible and visual
warning lights on?
Speed limits
While driving a vehicle equipped with
anti-breaks:
maintain a steady pressure on the break pedal until apparatus comes to a complete stop
Why should firefights open the
bleeder valve or drain valve between
the control valve and cap?
To ensure any
trapped pressure is
release
You are pumping into a pre-piped tower operating 80 feet above your pump with a 1 3/8 inch tip. You have connected
two 3-inch lines, 100 feet in length, with a siamese to the aerial. What is you discharge pressure?
192
You have connected to a dry standpipe with two 3-inch lines, 100 feet in length each. Your crew is operating on the 5th
floor with 200 feet of 2-inch light weight hose with a 1-inch tip. What is your pump discharge pressure?
157
You have two lines operating at the same time. The first line is 300 feet of 2 1/2 inch with a 1 1/8 tip. The second line is
300 feet with a 185 gpm fog nozzle. What is your pump discharge pressure?
234
You officer just pulled 250 feet of 2 1/2 static line with a 1 1/8 tip smooth bore nozzle. What is your pump discharge
pressure?
85
Your static pressure is 80 and residual pressure is 70. You are currently flowing 500gpm. What is the approximate
number of additional gallons per minute that the water supply will provide.
1000
