Which is a characteristic of smooth bore nozzles?
A. Prone to clogging with debris
B. Cannot be used to apply compressed air foam
C. Cannot be
... [Show More] adjusted to different stream patterns
D. Operate at higher nozzle pressures than fog nozzles
C. Cannot be adjusted to different stream patterns
How is the rate of discharge for a manually adjustable fog nozzle changed?
A. Pushing the bale forward or backward slowly
B. Rotating the nozzle tip to choose a wider or narrower pattern
C. Rotating the selector ring to the desired GPM (L/min) setting
D. Signaling the pump operator to reduce or increase the pressure
C. Rotating the selector ring to the desired GPM (L/Min) setting
Advancing an uncharged hose line down a flight of stairs is only recommended when:
A. The fire is minor or not present
B. There is an immediate need for water
C. The primary search has been completed
D.There are at least four firefighters on the hoseline team
A. The fire is minor or not present
Hand line streams have flows that discharge:
A. Less than 40 GPM ( 160 L/min)
B. From 25 to 300 GPM ( 100 to 1 200L/min)
C. From 40 to 350 GPM (160 to 1 400L/min)
D. More than 350 GPM ( 1 400L/min)
From 40 to 350 GPN (160 to 1 400L/min
Which type of hose stream is created by specialized nozzles such as cellar nozzles, piercing nozzles, or chimney nozzles?
A. Fog stream
B. Solid stream
C. Broken stream
D. Straight stream
C. Broken stream
What is caused by friction loss?
A. Increased nozzle reaction
B. Decreased nozzle reaction
C. Lower water pressure at the pump
D. Lower water pressure at the nozzle
D. Lower water pressure at the nozzle
Class a foam acts as a surfactant, which means that it:
A. Requires a special type of nozzle for application
B. Requires a special type of aeration tool to be formed
C. Lowers the surface tension of water, allowing better penetration into the fuel
D. Raises the surface tension of water, creating a more effective extinguishing agent.
C. Lowers the surface tension of water, allowing better penetration into the fuel.
The rate of application for class B foam depends on:
A. The location of the fuel spill
B. Whether or not the fuel is a surfactant
C. The type of water used to proportion the foam
D. Whether the fuel is spilled or contained in a tank
D. Whether the fuel is spilled or contained in a tank
What is necessary when applying fire fighting foam?
A. A vapor protective suit and SCBA
B. A hazardous materials team standing by
C. Continued, uninterrupted application until extinguishment
D. Intermittent application breaks to allow the foam to settle
C. Continued, uninterrupted application until extinguishment
Mixing water with foam concentrate to form a foam solution is referred to as:
A. Aerating
B. Surfacting
C saponifying
D. Proportioning
D. Proportioning
Most fire fighting films are intended to be mixed with:
A. 30to60% water
B. 50 to 75.9% water
C. 80 to 90% water
D. 94 to 99.9% water
D. 94 to 99.9% water
Class B foams are especially effective on
A. Surfactants
B. Hydrocarbon fuels
C. Ordinary combustibles
D. Energized electrical equipment
B. Hydrocarbon fuels
Which type of foam proportioner is directly attached to the pump panel outlet or connected at some point in the hose lay?
A. In line eductor
B. Foam nozzle eductor
C. Apparatus mounted proportioner
D. Compressed air foam system ( CAFS )
A. In-line eductor
A (an) __________ concept allows all responders to use a similar, coordinated approach with a common set of authorities, protections and resources:
All Hazard
Most fire departments are organized in a series of levels, with the intermediate levels made up of personnel assigned by: ______
Rank and Duty
Each employee reporting to just one supervisor, who in turn moves up the chain of command, is an example of:
Unity of command
Multiple fire companies within a response area whose day-to-day functions are overseen by the operations division are called a (an):
Battalion
Fire department line personnel are responsible for:
A. repairing broken department apparatus
B. Providing emergency services to the public
C. overseeing the departments annual budget
D. organizing personnel medical evaluation records
B. Providing emergency services to the public [Show Less]