Acting Engineer Test Flashcards
(102 cards)
1
Q
According to NFPA 1901, fire
department pumpers should have a
minimum pump capacity of:
A
750 gpm
2
Q
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:
A
Reaction Distance
3
Q
All aerial device movement should be
slow, smooth, and controlled because
of the:
A
force being
generated.
4
Q
Apparatus equipped with a diesel particulate filter (DPF) will have:
A
very clean
exhaust emissions
and no black
smoke
5
Q
Apparatus equipped with pressure
governors should be set in:
A
Pressure mode when acting as the attack pumper and RPM mode while working as a relay pumper.
6
Q
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:
A
quint
7
Q
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:
A
load sequencer
8
Q
The current formula for friction loss accounts
for the diameter of the hose, the volume of
water flowing and the:
A
length of the hose layout
9
Q
The deck gun mounted to the engine has a 1
1/2 inch tip. What is the pump discharge
pressure?
A
90
10
Q
During pumping operations driver/operators
should maintain a residual pressure on the
master intake gauge:
A
of at least 20 psi
11
Q
During response to a possible hazardous
material incident, the apparatus should
approach from:
A
uphill and upwind
12
Q
For a multistage centrifugal fire pump,
switching from volume to pressure.
A
can result in immediate doubling of previous discharge pressure.
13
Q
For which of the following is a nozzle
pressure of 80 psi a safe and efficient
nozzle pressure?
A
Solid stream
nozzle (master
stream)
14
Q
Generally, the maximum flow for a
handline is 350 gpm (1400L/min)
because greater flows will:
A
produce a nozzle reaction that is difficult or dangerous for firefighters to handle
15
Q
How is the pumper position to supply
a fire department connection best
determined?
A
Through pre-
incident planning
16
Q
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?
A
72
17
Q
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:
A
150 psi into the FDC
18
Q
If discharge flow volume is increased too
much when operating from the
pressurized water source:
A
it may lead to
cavitation of the
pump.
19
Q
If the building has been exposed to
severe fire conditions, it is MOST
advisable to park:
A
outside of
the buildings
collapse zone.
20
Q
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?
A
To prevent
the pump from
overheating
21
Q
In general, pumps supplying a relay
operation or master stream are used to
supply large amounts of water and
therefore require:
A
use of a parallel (volume) setting of the transfer valve.
22
Q
In most jurisdictions, when civilian drivers
encounter emergency vehicles
responding with warning lights activated
and audible devices sounding they must:
A
pull to the right, stop, clear intersections, and remain motionless.
23
Q
In order for apparatus to come to a
complete stop on snow and ice, it may
take:
A
3 to 15 times greater distance than it does on dry pavement.
24
Q
In order to produce fire fighting foam,
what three items must be educated or
injected in correct ratios?
A
Foam
concentrate,
water, air
25
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
26
Newer operators should avoid full-speed
| operations until:
```
they are
very familiar
with the
operations of
the aerial
device.
```
27
Nozzle reaction occurs as water is
discharged from a nozzle a given pressure
and:
```
a
counterforce
pushes back
against
firefighters
operating the
hoseline
```
28
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
29
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.
30
Pressure for standpipes operations for fire
| departments may be:
```
labeled
on the
faceplate
of the fire
department
connection
```
31
Solid stream nozzels on handlines should be
| operated at a maximum of:
50 psi
nozzle
pressure
32
A solid stream nozzle produces a fire stream
| that has a:
```
tight
stream and
little spray
or shower
effect
```
33
Total pressure loss includes friction loss and
elevation pressure loss combined with the
loss associated with:
appliances
34
Using an aerial device as an
exterior standpipe to upper floors
is a tactic that:
can eliminate
difficult hose lays up
interior stairwells.
35
Weight carried on most apparatus
| can contribute to:
Skidding or possible
rollover due to lateral
weight transfer
36
What agency in the United States
establishes basic requirements for
licensing a driver?
Federal Department
of Transportation
(DOT)
37
What hundred block east is
| Detroit?
2800
38
What hundred block is Boulder St?
2600
39
What hundred block is Mansfield?
3900
40
What hundred block is Market St.?
1400
41
What hundred block is Yosemite?
8900
42
What hundred block north is Albrook Dr at
| Peoria?
4700
43
What hundred block south is Cedar?
200
44
What hundred block west is Eliot?
2900
45
What hundred block west is Fox?
600
46
What is the pump discharge pressure for 300
feet of 1 3/4 hose with a 15/16-inch smooth bore
nozzle?
209
47
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
48
What location is generally considered the safest
position for apparatus placement should a
structure collapse occur?
corners of the structure
49
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
50
What street is 1200 south?
Arizona
51
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
```
52
When a pumper is connected to a
hydrant and not discharging water,
pressure shown on intake gauge is:
static pressure
53
When a pumper is discharging water
| the intake gauge displays:
residual pressure
54
When examining tire condition,
| driver/operators should check:
excessive wear on the sidewalls
55
When giving a hand signal, the
spotter crosses both forearms
into a large X. This means:
stop the apparatus
56
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.
57
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.
58
When pinnable waterways are
operated in the rescue mode,
the master stream nozzle is;
one aerial section
| lower than the tip.
59
When possible, the
driver/operator should position
an aerial apparatus at the:
corner of the building
60
When pumping in the parallel
| (Volume) position:
each of the impellers
takes water from a
source and delivers it to
the discharge.
61
When pumping in the parallel
| (Volume) position:
each of the impellers
takes water from a
source and delivers it to
the discharge.
62
When should the mirrors be
| adjusted on an apparatus?
Any time driving
responsibilities change
from one individual to
another.
63
When spotting an apparatus at a
structure fire incident,
driver/operators should be the
MOST aware of:
falling debris
64
When stabilizing an aerial
| apparatus:
never set up on
slopes exceeding the
manufacturer's
recommendations.
65
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.
```
66
```
When would be the BEST time to
develop apparatus placement
procedures involving access to
occupancies and overhead
obstructions?
```
During preincident
| planning
67
Which consideration would MOST
likely be taken into account when
positioning an aerial apparatus
fire pump?
Reach of the aerial
| device
68
Which of the following actions
would MOST likely be considered
reckless when driving an
apparatus?
Failing to yield to
other responding
emergency vehicles
69
Which of the following BEST
describes the function of a pressure
governor?
Regulates engine
speed to match
pump discharge
pressure.
70
Which of the following BEST
describes the main feature of relief
valves?
Ability to relieve
excessive pressure
within the pump
discharge
71
Which of the following BEST
describes the process of climbing an
aerial device and device operations?
Personnel may
climb once device
is positioned.
72
Which of the following BEST
determines the most advantageous
position for an attack pumper?
size-up
73
Which of the following can BEST
assist the driver/operator when
operating an aerial device in high
wind conditions?
load chart
74
Which of the following can occur when
pumping at a low residual pressure while
being supplied by other apparatus?
Cavitation of
| the pump
75
Which of the following customary
formulas would be used to conduct
elevation pressure loss calculations on
the fireground?
0.5 x Height
| in feet
76
Which of the following displays engine
| speed in revolution per minute?
Tachometer
77
Which of the following factors is MOST
likely to affect the degree of expansion
in foam solution?
Rate of
| application
78
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.
79
Which of the following is a
characteristic of master
stream nozzles?
Offer ability to operate at
a greater distance from the
fire
80
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
```
81
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
82
Which of the following is a
| main use for aerial ladders?
Gaining access to upper
levels of an emergency
scene.
83
Which of the following is one of the three
main portions of an aerial ladder to which
firefighters and driver/operators commonly
refer?
rungs
84
Which of the following is the correct
customary formula for determining pump
discharge pressure?
```
Nozzle
pressure
plus total
pressure
loss
```
85
Which of the following is the formula for
| friction loss?
FL =
| CQ2L
86
Which of the following is the MOST likely
| reason for a locked wheel skid?
Braking
too hard at
high speed
87
Which of the following is the primary reason
| for daily pretrip inspections?
Minimize
mechanical
failure
88
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
```
89
```
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
90
Which of the following refers to
any pressure less than
atmospheric pressure?
vacuum
91
Which of the following should be
| done to prevent water hammer?
Close all valves
| slowly.
92
Which of the following
statement about rescue tools is
MOST accurate?
Power systems may
be portable or apparatus
mounted.
93
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.
```
94
```
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
95
Which of the following would MOST
likely be exempt when emergency
vehicles have their audible and visual
warning lights on?
Speed limits
96
While driving a vehicle equipped with
| anti-breaks:
```
maintain a
steady pressure on
the break pedal
until apparatus
comes to a
complete stop
```
97
Why should firefights open the
bleeder valve or drain valve between
the control valve and cap?
To ensure any
trapped pressure is
release
98
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
99
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
100
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
101
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
102
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
