Driver/Operator Questions Flashcards
NFPA 1582 Standards on Medical Requirements for firefighter, requires that driver/operator have a corrected far vision acuity of ____ with contacts or glasses
1/2
Who is held responsible of a driver/operator becomes involved in a MVC
The driver/operator
The fire department
Fire Apparatus are classified according to
Function for which it was designed
Fire department pumpers are commonly called all the following except
Truck
The main purpose of the fire department pumper is to
provide water at an adequate pressure for fire streams
According to NFPA 1901, Standards for Automotive Fire Apparatus, the min pump capacity for fire apparatus is
750 gpm
Apparatus which carry all standards engine company equipment, but also feature a larger than standard amount of rescue and extrication equipment are commonly called
Rescue pumpers
Municipal and industrial foam pumper may ne equipped with one of the following foam systems except
Under the pump
Pumping apparatus with elevated water devices typically range in height from
50-75 feet
According to NFPA 1901, apparatus must carry at least ___ in order to be considered a mobile water supply apparatus
1000 gallons
Weight distribution and load requirements generally limit mobile water supply apparatus to carry ___ or less for single rear-axle vehicles
1500 gallons
According to NFPA 1901 the min pump capacity for aerial apparatus should be
250 gpm at 150 psi
Most hydraulic tool’s pumps are not capable of supplying full power to the tool if the hose length between the pump and the tool exceeds
100 feet
NIMS categorizes pumping apparatus (including water tenders) by capability. This method is called
Apparatus typing
Using the FEMA Engine Typing Requirements, what would be the pump capacity of a Type III pumper
120 gpm
To extend the working life of their trucks, some fire departments employ smaller units called
Ladder-tenders
Typically the water capacity of a ladder tender is
300 gallons
Engine Tenders differ from Rescue Pumpers in that
They do not have the firefighter capabilities as a full-sized fire department pumper
To restore or replace that which had become inoperable best describes which of the following
Repair
If a fire apparatus requires waxes and polishes, it should not be applied to a new vehicle until the vehicle is at least
6 months old
Where does the “circle” or pre-trip walk-around end
Inside the cab by starting the apparatus and performing a functional check on apparatus system
In checking apparatus sirens and air horns, ear protection should be worn if any personnel will be exposed to noise levels in excess of
90 decibels
The process in which the load monitor shuts down less important equipment to prevent overload is referred to as
Load shedding
The amount of “play” in the steering wheel should not exceed more than __ in either directions
10 degrees
A steering wheel with the diameter of 20 inches should have no more play of
2 inches in either direction
NFPA 1901 braking test requires that new apparatus must ne brought to a complete stop
From a speed of 20 mph in a distance not to exceed 35 feet
On apparatus equipment with air brakes the NFPA 1901 Standards requires that air pressure to build up to a sufficient level to allow safe vehicle operations with a time span of ___ after starting the apparatus
60 sec
To test the road brakes the driver should allow the vehicles to move forward at a speed of about 5 mph. The driver then applies the brakes firmly. The apparatus should come to a stop with in about
20 feet
Battery connections should be cleaned with
Baking powder soda and water
Historically, the charging of vehicle batteries is a function that is commonly performed by
The driver/operator of the vehicle
Charging batteries produce which of the following explosive gases
Hydrogen
Which should be connected first when charging a battery
Positive (red)
All of the following inspections should be performed on a weekly basis except which of the following
Operate the controls to check or inspect the fire pump
Apparatus glass should be cleaned with all but which of the following
Dry towels
During a vehicle inspection the 1st position of the vehicle specifically checked should be the
Left (driver) side of the front cab
When should a driver/operator test the warning devices of apparatus
Only when the driver is in the cab and no one else is around
Approximately how many firefighter deaths per year are associated with vehicle collisions while responding to or returning from emergency calls
25
According to DOT approximately how may civilians are killed per year that are associated with emergency vehicle collisions, while responding to or returning from emergency calls
25
According to a study conducted by the Indiana University of Pennsylvania (IUP) the greatest number of collisions occur during
Daylight
Which of the following would not be considered one of the 5 basic causes of fire apparatus collisions
Poor road conditions
According to IFSTA all of the following are factors that may contribute to collisions that involve driver/operator as the cause except
Lack of confidence in one’s driving ability
Which of the following vehicles have a high incidence of serious collisions
Home built water tenders
When starting an emergency vehicle the 1st thing the driver/operator needs to know is
Where the apparatus is going
The first thing the driver/operator should do when starting a vehicle and begin the response is to
Disconnect the ground shore lines (external electric cords, air horns, etc.)
The apparatus starter control should be operated at intervals of no more than ___ with a rest time of ___ between try if the vehicle does not start sooner
30 sec
60 sec
If after starting the vehicle the oil pressure gauge does not indicate any reasonable amount of oil pressure with in ___ the driver/operator should stop the engine immediately and have the lubrication system checked by a trained mechanic
5-10 sec
When driving an automatic transmission emergency vehicle in leaving traffic the shift selector position should be
3 or 1-3
When driving an automatic transmission emergency vehicle over moderate grades at moderate speeds the shift selector position should be
4 or 4-1
When the throttle application is greater than necessary for a given set of conditions, the result is referred to as
Lugging
Which of the following statements is true
The lugging state should be avoided by the driver/operator because of the possibility of damaging the power plant
Over throttling a diesel engine results in all the following except
Reduction of fuel consumption
By choosing a gear that cruises the engine at 200-300 rpm lower than the recommended rpm will have all the following results except
Raise power loses from the fan, driveline and accessories
It is recommended that the engine of the apparatus should be shut down rather than allowing it to idle for long periods of time. long idling periods can result in the use of __ of fuel per hour
1/2 gallon
When an apparatus must ne idled for long periods of time because of extremely cold weather or during lighting operations, the driver/operator should
Set the idle at 900-1100 rpm
An engine should never be shut down immediately after full-load operations. The driver/operator should allow the engine temp to stabilize before it is shut down. What is the recommended idle time in order to accomplish this
3-5 min
NFPA 1500 Standard on fire department Occupational Safety and Health Program states that all riders of fire apparatus must be seated and belted. The Standard however provides 3 exception which of the following is not an exception to this standard
When pump and rolling with personnel stationed on top of the apparatus with hand-lines or master streams during wild land firefighting operations
Which of the following statements regarding hose-loading operations is not true
The apparatus must be driven carefully in reverse direction with a safety observer located at the rear left side of the apparatus
When backing up fire apparatus, which of the following would be considered the most desirable for insuring the highest degree of safety
Two spotters one with a portable radio to communicate with the driver and the other to assist the first spotter
The term referred to as the distance a vehicle travels while the driver is transferring his foot from the accelerator to the brake pedal after perceiving the need to stop the vehicle is called
Reaction distance
___ occurs as a result of the physical law that states that objects in motion and objects at rest tend to remain at rest unless acted upon by an outside force
Weight transfer
When driving apparatus with ABS braking system and the driver must make an immediate stop how should he work the brake pedal
Maintain steady pressure on the brake
When operating an apparatus not equipped with ABS brakes and the apparatus starts to skid do all of the following except
Turn the apparatus steering wheel so that the vehicle faces in the opposite direction of the skid
Some apparatus built before the mid-1970s have an auxiliary braking system that road/slippery roads switches when the switch is set to the slippery road setting air pressure on the front steering axle is reduced by
50%
The system that helps improve traction on slippery roads by reducing drive wheel over spin is called
ATC
All the following statements regarding passing other vehicles are true except
Always travel on the outer most lane on a multilane road
When traveling at speeds grater than ___ an emergency vehicle may out run the effectiveness of its audible warning devices
50 mph
In a study conducted by the Driver’s Reaction Course Concluded that a siren sounding on a vehicle traveling at 40 mph will project ___ ahead of the vehicle
300 feet
In a study conducted by the Driver’s Reaction Course concluded that a siren sounding on a vehicle traveling at 60 mph will project __ ahead of the vehicle
12 feet
The use of warning devices should be restricted to true emergency responses. Warning devices should not be used on any of the following calls except
Car fires
T/F
Spot light moving across the back window of a vehicle will rapidly get the drivers attention. However, it should not be left on because it may blind the driver
True
The Opticom (TM) system controls traffic lights by
Sending light from special strobe lights called emitters on the apparatus to sensors mounted on the traffic signal
The SONEM 2000 system controls traffic lights by
Utilizing a microphone on the traffic light that “hears” the siren of the apparatus and in turn sends a signal to the traffic signal controller
If 2 pieces if apparatus are approaching a traffic signal equipped with the opticom system what will be the result
Vehicle tat trigger the system first will get the green light
When executing the alley dock exercise what is the width of the space the driver must back into
12 feet
In the apparatus station parking maneuver an apparatus by is simulated by allowing a __ foot min set back
20-30 feet
When setting up a serpentine course the markers should be spaced between __ depending on the size of the apparatus being used
30-38 feet
The confined space turn around is performed in an area that is a least __ wide and ___ long
50
100
Along the length of the diminishing clearance course the lane narrows from a width of __ to a diminished clearance of __
9 feet 6 inches
8 feet 6 inches
When concluding the diminishing clearance test the driver/operator must stop the vehicle with the front bumper within __ of the finish line
6 inches
What hazards do warning lights on apparatus as well as flood lights pose to firefighters once the apparatus has reached an emergency scene
They reduce the effectiveness of the reflective trims of firefighter’s protective clothing
Determining the proper position for the attack pumper begins with
Sizing up the incident
If the first due apparatus arrives where no fire conditions are evident (investigation mode) it is normally advisable to park
Near the main entrance to the occupancy
You arrive at abuilding and the structure is shoeing serious signs of collapse, How far away from the building should the perimeter of your collapse zone be, if the building stands 100 feet tall
150 feet
Which type of fire apparatus should be given optimum position at a working structure fire
Aerial apparatus
If a building is less than 5 stories tall, engine companies should be posted
On the side of the street closest to the building and aerial apparatus parked on outside
Pumpers that are providing water for elevated stream operations should be positioned
As close to the aerial apparatus as possible
True/False
When performing drafting operations the strainer and hard suction should be attached to the pumper before positioning it at the water source
True
All on shore connection consisting of a length of pipe equipped with a strainer that extend into a water supply source is called
Dry hydrant
A properly in stalled dry hydrant should position the strainer at least __ from the bottom, the top and the edge of the water
2 inches
In most jurisdictions the most common water supply source is a
Swimming pool/ portable pond
When attaching a large diameter hose line on the large diameter discharge of a hydrant the smaller diameter discharge should be
Gated on both sides
A good way to min kinks when connecting soft sleeve from the apparatus intake to the hydrant discharge it to
Put 2 full twists in the hose when making the connection between the apparatus and the hydrant
The large intake connection on a pumper is commonly referred to as the
Steamer connection
Intake header
The type of pumping operation that occurs when 2 pumper are being supplied by the same hydrant and are connected to each other via intake to intake is called
Dual pumping
The first step on setting up a dual pimping operation is
Pumper 1 connects to a hydrant steamer connection using a large intake hose
Tandem pumping operations are normally utilized under all the following circumstances except
When the attack pumper is position very far from the hydrant
Tandem pumping operations can be performed be placing pumpers as much as ___ away
300 feet
The typical bank of air cylinder in a cascade system is
4-12 cylinders
How close should mobile air supply apparatus park to a fire scene
Close enough to the scene so that the firefighter so not have to carry their SCBA tanks an extra ordinary distance
Generally who becomes the “staging area manger” during an emergency incident
The company officer of the first company to arrive at the staging area
You and your crew have been assigned a MVC on a 4 lane interstate highway 2 cars are blocking the extreme right hand lane, which lanes should be closed in order to allow firefighters to safely work at the scene
The lane immediately next to the incident
The immediate area surrounding a hazardous materials incident is called the
Hot zone, red zone, exclusive zone
The warm area is commonly called any of the following except
Staging zone
What do ornament stars mounted on the sides of building indicate
That the building has structural problems and has a high collapse potential
What determines the flow from a solid nozzle
The diameter of the hose line
Size of the discharge opening
All of the following are important to know when discussing the mechanical principles of fog streams except
Propulsion
To strike or dash about or against, clashing with the sharp collision or to come together with force best describes which of the following
Impinge
The line bounding around surface or the outward boundary of an object distinguishes from its internal regions best describes which of the following
Periphery
A turning or state of being turned, a turning from a straight line or given course or a bending or a deviation best describes which of the following
Deflection
A fog stream nozzle that drives several jets of water together at a set angle to break the water up onto finely divided particles is called
Impinging stream
___ are produced by deflecting water from the periphery to an inside circular stem in a periphery-deflected fog nozzle
Periphery-deflected streams
High pressure fog nozzles are best used for fighting which of the following types of fire
Wildland fires
High pressure fog nozzles generally only flow
8-15 gpm
Master streams normally have a flow rate of
300 gpm or grater
A __ consists of a short length of large diameter hose that has a large nozzle or large playpipe supported at the discharge end by a tripod
Deluge set
A __ is mounted on the fire apparatus deck and is connected directly to the pump y permanent pipe
Turret pipe
What size diameter hose normally supplies ladder pipes
3 inches
True/False
Ladder pipes can be controlled by firefighter at the tip of the ladder and ladder pipes can be controlled by using a rope from the ground
True
True/False
Movement of ladder pipes is limited to vertical up and down movement
True
According to NFPA 1901 Standard for Automotive Apparatus which of the following nozzles are required to be carried on fire department pumpers
Cellar nozzles, water curtain, piercing, chimney
None
Cellar water-curtain piercing and chimney nozzle are all considered
Broken stream nozzles
Piercing nozzles are capable of deviling __ of water
100 gpm
According to IFSTA, tests have revealed that the practical working limits for velocity of fire stream are within __ feet per second
60-120
When it comes to approximating the nozzle reaction on the fire ground of a solid stream the rule of thumb is to use the following formula
NR= Q/3 Q= Total flow through nozzle
FL may be caused by all of the following conditions, however, which of the following would be considered the primary determinant affecting the amount of FL with in a hose line
The volume of water flowing per min
The combination of FL + EP loss is referred to as
Total pressure loss
Which of the following formulas is used to calculate hose line FL
FL= CQ 2L
You are about to test 50 foot length of hose to determine FL coefficients how much hose should be laid out in order to perform an accurate test
300 feet
When determining FL coefficients using in line gauges how far from the second gauge should the nozzle be placed if you are testing hose in 100 foot length
100 feet
When performing FL determinations which of the following may be used to measure flow from the hose line
Use GPM=29.7d 2 sqr NP
Pitot tube
Flowmeter
When the total flow in a hose in is grater than 350 gpm how much additional FL is calculated for each appliance other than master streams
10 psi
How much additional FL is calculated in a hose line when it is fitted with a master appliance
25 psi
Which of the following formulas can be used to determine EP
EP=0.5xH
EP=5psi x(number of stories -1)
FL must be taken into account when using which of the following hose layouts
Single hose lines
Multiple hose lines
Wye or manifold hose lines
Siamese’s hose lines
When 2 hose lines of equal length are siamesed to supply a working fire stream the FL is approximately ___ of that of a single hose line at the same NP
25 psi
When 3 hose lines of equal length are siamesd to supply a working fire stream the FL is approximately __ of that od a single hose lien at the same NP
10%
As a driver/operator how much more pressure loss must be added to your calculations involving master streams devices
25%
When using a master stream as part of the total hose configuration and using hoselines of unequal lengths or diameters friction loss is calculated
Average pressure loss of all the lines
Which of the following formulas is used to calculate “Pump Discharge Pressure”
PDP=NP+TPL
Ensure safety and efficiency fog nozzle should be operated at a NP of
100 psi
Which of the following is the correct formula for calculating ‘Net Pump Discharge Pressure’
NPDP=PDP-intake reading
What is the boiling point of water
212F
The amount of heat required to raise 1lb of water 1F is known as
BTU
The quantity of heat absorbed by a substance when it changes from a liquid to a vapor is called
Latent heat of vaporization
The temp at which a liquid absorbs enough heat to change to a vapor is called it
Boiling point
How many BTUs is absorbed when 1lb of water is heated to 212F
970
What is the weight of 1 gallon of water at 60F
8.33lbs
How many BTUs are required to raise 1lb of water at 60F to 212F
152
One gallon of water at 60F will absorb __ getting to 212F
1266
Once water reached a temp of 212F how many BTUs/lb are required to convert 1 gallon of water to steam
8080
How many BTUs of heat can water at a temp of 60F absorbed when it is converted to steam
9346
If 1 gallon of water at a temp of 60F absorbs 9346BTU of heat, hoe much heat can be absorbed if water at a temp of 60F is projected from a fog nozzle pumping at 100gpm
934600 BTU
When heated to 212F water will expand approximately __ times its original volume
1700
What is the specific gravity of water
1
If most flammable liquids have a specific gravity less than water then the flammable liquid would have a tendency to
Float on top of water
All of the following statements regarding water are true except
Water has high levels of opacity and reflectivity that disallows radiant heat from passing through it
The weight of 1 cubic foot of water is approximately
62.5lbs
The speed in which water travels is referred as
Velocity
Which of the following statements is not true
The pressure of a liquid on the bottom of a vessel is dependent on the shape of the vessel
The height of water supply above it’s discharge orifice divided by 2,304 is referred to as
Head pressure
The center line of the pump of the bottom of a static water supply source above or below ground level is called
Elevation
Both pressure loss and pressure gain are referred to
Elevation pressure
Altitude affects the production of fire streams because
Atmospheric pressure drops as the height above sea level increases
The part of the total pressure loss while forcing water through pipe, fitting, fire hose, and adapters is called which of the following
Friction loss
Fire department that use old hose may increase friction loss with in the hose by as much as
50%
Which of the following statements regarding friction loss is not true
For a given flow velocity friction loss tends to decrease regardless of the pressure on the water
Which of the following statements is not true
One of the physical properties of water is that it compresses easily
Realistically, hose larger than __ cannot be used for hand lines
3 inches
One can reduce friction loss by
Decreasing hose length
Increase hose diameter
Eliminating sharp bends in the hose
In order to flow more water through a hose line after its speed has reached critical velocity it is necessary to
Parallel hose line by using Siamese connections to increase flow and reduce over all friction loss
The amount of water needed for fire protection in small towns is __ than the amount of water needed for industrial and domestic use
Greater
Which of the following would be considered an example of ground water supply
Springs
Which of the following would not be considered on of the 3 methods of moving water in a system
Vacuum pumping system
Which water pumping system uses one or more pumps to take water from a primary source and discharge it through a filtration and treatment process
Direct pumping system
What is a fire department’s main concern regarding water treatment facilities
The fear that a maintenance error, natural disaster, loss of power supply or fire could disable the pumping stations or severely hamper the purification process
Large mains with relatively wide spread spacing that convey large quantities of eater to many locations of a system that are locally distributed to smaller main are called
Primary feeds
A grid arrangement of smaller water main that serve individual fire hydrants and blocks of consumers are called
Distributors
Fire hydrants supply mains in residential areas should be at lest __ in diameter
6 inches
Fire hydrants supply mains in business and industrial areas should e at least __ in diameter
8 inches
Water main valves should be operated __ to keep them in good working order
At least once a year
Residential business an industrial district fire hydrant supply mains should be closely gridded by cross connecting mains every
600 feet
The water main valve that has the words open or shut indicating the valves present position is called
Post indicator valve (PIV)
Control valves in water distribution systems are
Gate valves or butterfly valves
Which water main valve rotes 90 degrees from the fully opened position to tightly shut
Butterfly valves
Water pipes are usually made from which of the following materials
Cast iron Ductile iron Asbestos cement Steel Plastic Concrete
The average of the total amount of water used in a water distribution system over a period of 1 year is called
The average daily consumption
The max daily consumption of water is normally approximately __ times the average daily consumption
1 1/2
In firefighter elevation refers to
The position of the nozzle in relation to the pumping apparatus
Which of the following statements regarding the physical characteristics of water is not true
The lesser the surface area of water exposed the more rapidly heat is absorbed
Which of the following governs the heat absorbing ability of water
Specific heat and latent heat of vaporization
The tendency of a liquid to possess internal resistance to flow is known as
Viscosity
Friction loss may be caused by all of the following conditions however which of the following would ne considered the primary determinant affecting the amount of FL within a hose
The volume of water flowing per min
Differences in pressure due to changes such as hills, aerial ladders, gullies or multi story buildings, create a pressure loss known as
Elevation pressure
The combination of FL an elevation pressure loss as referred to as
Total pressure loss
IFSTA and NFPA use to help approximate FL for the various types of hose in use today
FL coefficients
When using a master stream as part of the total hose configuration and using hose line of unequal lengths or diameters, FL is calculated by using the
Average pressure loss of all the lines
Flow meters provide the driver/operator with
The volume of water flow, measured in gallons per m in, going through the discharge
T/F
Discharges 3 1/2 inches or greater can be equipped with floe meters but they must also have an accompanying pressure gauge
True
Which of the following are considered types of flow meters
Paddle Wheel
Spring Probe
Some apparatus are equipped with a central flow meter monitoring device that allows the driver/operator to monitor all the following
The amount of water left in the tank that has yet to be pumped
Which of the following applications in which the use of a flow meter would not be helpful to a driver/operator
Drafting
Over the year driver/operators have used which of the following methods for calculating FL in 2 1/2 inch hose
Hand method
Counting finger methods
When using the hand method how is each base of the finger numbered
In terms of hundreds of gpm
The condensed Q formula was developed for fire ground operations to determine FL from which of the following size hose
3,4,5 inch
Which of the following represents the condensed Q formula for 5 inch hose
FL per 100ft= Q2/15
All of the following are true regarding using the GPM flowing methods except
The method can be used for both metric and US
