FINAL EXAM
When operating at churn, a new fire pump must not develop more than what percent of its rated pressure?
140%
In an unsprinklered building, NFPA® 14 requires that a hose station be provided so that no area within the building is more than how far from a hose connection?
150 feet
When inspecting sprinklers, a clearance of at least how many inches should be maintained between sprinklers and stored materials?
18 inches
Wet chemical systems should not splatter the grease or oil when discharged and provide a foam blanket that remains intact for at least:
20 minutes
Which hose connection may be equipped with a reducer on the cap that allows for the connection of a 1½-inch (38 mm) hose coupling?
2½-inch (65 mm) hose connections
In order to ensure that a fire pump is in good operational condition, codes require that a diesel engine driver be test run weekly for what period of time?
30 minutes
In a fire pump room, heating equipment must be capable of maintaining a minimum temperature of:
40*F
What is the maximum size of a water extinguisher that is considered truly portable?
5 Gallons
Extinguishers with a gross weight of 40 pounds (20 kg) or less should be installed so that the top of the extinguisher is not more than how many feet (meters) above the floor?
5 feet
According to the International Fire Code®, if a building is equipped throughout with an automatic fire sprinkler system, a fire hydrant is required within:
600 feet (183 m)
The current NFPA® 14 minimum requirement for residual pressure in a standpipe system is:
65 psi for 1½-inch hose connections and 100 psi for 2½-inch hose connections.
Which is one of the identifying features of a strong distribution system?
A grid system that uses pipes which are 8 inches (200 mm) and larger
Portable extinguishers carried on fire apparatus must be suitable for which of the following classes of fires?
A, B, C
Which nozzle is the most effective appliance for generating low-expansion foam?
Air-aspirating foam nozzle
What specialty signal is a warning of a fire emergency or dangerous condition?
Alarm signal
When the installation of a standpipe system has been completed, at what location is the flow test for a fire pump conducted?
At the highest outlet in the system
Which type of standpipe system is most desirable because water is constantly available at the hose station?
Automatic wet
Which of the following four basic pipe materials is the MOST common type of piping used in a sprinkler system?
Black steel
Which person should be available for consultation about the use of a building's smoke control system during a fire emergency?
Building engineer
Which is frequently identified as the cause of death for civilian fire fatalities and firefighters who have run out of air in their self-contained breathing apparatus (SCBA)?
Carbon monoxide (CO)
What is the component that provides overcurrent protection to the controller of an electrically driven fire pump?
Circuit breaker
Which class of fire can be extinguished by cooling, smothering, insulating, or inhibiting the chemical chain reaction?
Class A
Which fire classification involves ordinary combustibles, such as wood, cloth, paper, rubber, and many plastics?
Class A
For foam application, the use of smooth bore nozzles is limited to:
Class A, compressed-air foam system (CAFS) applications.
A ____ involves flammable or combustible liquids and gases, including grease and similar fuels, which can be extinguished by oxygen exclusion, smothering, insulating, and inhibiting the chemical chain reaction.
Class B
Since plain water conducts electricity, it is ineffective and dangerous on which class of fires?
Class C
What is the primary way water extinguishes fire?
Cooling
Which specialty sprinkler type is engineered to combat the growing challenge associated with high-rack storage facilities?
Early Suppression Fast Response
When a reducer is required to be installed on the suction side line of a fire pump, the reducer is required to be of what type?
Eccentric
Which system component receives and processes signals from alarm initiating devices?
Fire alarm control unit (FACU)
Which type of foam fire-extinguishing system is a complete installation in which foam is piped from a central foam station and automatically discharges?
Fixed foam
With water flowing, as the length of hose or piping increases, which of the following increases also?
Friction loss
_______ is that part of the total pressure that is lost while forcing water through pipes, fittings, fire hose, and adapters.
Friction loss
Which type of pressure is created by a column of liquid?
Head
Which of the following is a true statement with regard to private water supply systems?
Large, well-maintained systems may provide a reliable source of water for fire protection purposes.
Which law refers to the quantity of heat absorbed by a substance when it changes from a liquid to a vapor?
Law of latent heat of vaporization
Which of these is a potential advantage of nondedicated smoke control systems?
Less change for component failure to normal use and maintaenance.
Because they may be more restrictive, what else should be reviewed for fire extinguisher distribution along with the requirements of NFPA® 10?
Local codes and ordinances
In order to be effective, NFPA® 10 recommends that extinguisher inspections be performed:
Monthly
Which of the following is an advantage of a dedicated smoke control system over a nondedicated system?
Operation and control are generally simplier
The criteria for a building smoke control system are shared with the local approving agency during which stage of a building construction project?
Planning
When water is mixed with a foam liquid concentrate to form a foam solution, this is known as what stage of foam production?
Proportioning
In which type of foam system is the foam discharge piping in place but not attached to a permanent source of foam?
Semifixed Type A
Which of the following is MOST accurate concerning an ideal fire control system?
Simple, reliable, and automatic
What type of carbon monoxide detector is typically used in residential locations?
Single-station
Which of the following is an example of an initiating device?
Smoke detector
The primary mechanism for extinguishment of carbon dioxide systems is:
Smothering
Which of the following BEST explains why underground valves should be on every branch feeding a hydrant?
So that each hydrant can be isolated during repair or replacement
Which agent expelling method involves the pressure of the gas forcing the agent out through a siphon tube, valve, and nozzle assembly?
Stored-Pressure
If an extinguisher is capable of extinguishing several classes of fire, the alphanumeric designation will denote this information by showing multiple number-letter ratings on:
The Faceplate
From what source do fire detection and alarm systems usually obtain their primary electrical power supply?
The building's main power connection to the local utility provider
Which of the following is the MOST accurate concerning automatic sprinkler systems within commercial properties?
They are designed to protect all occupied areas and concealed spaces within a building.
Which dry chemical fixed system introduces a thick cloud of agent into a closed area?
Total Flooding
Clean agent systems store the extinguishing agent as a liquid and when the agent is exposed to the atmosphere it:
Turns into a gas
Which of the following is a condition creating a major challenge for many municipalities that must maintain a continuous or uninterrupted water supply for public demand?
Undetected Underground leakage
In the 1980 MGM Hotel fire in Las Vegas, most of the fatalities were found in the:
Upper floors.
The MOST important factor in determining the effectiveness of an extinguisher in dousing a fire is the:
User
What category of notification appliances uses strobes or flashing lights to indicate a fire or emergency condition?
Visual
Which capability allows modern initiating devices to monitor conditions in a protected space?
Visual
Clean agent systems may be used as backup in conjunction with what type of fire suppression systems?
Water Based
The fire department's main concern regarding water treatment facilities is:
a situation at the facility that would drastically reduce the volume and pressure of water available for fire fighting operations.
The pressure that decreases as the altitude increases is:
atmospheric.
Usually, a fire pump is needed to supply a sprinkler or standpipe system because the:
available water supply source cannot supply the needed pressure
The most common type of water-mist system works similarly to a traditional:
deluge system.
What are the two MOST common types of drivers that are presently acceptable for use with fire pumps?
electric and diesel
Water's density is highest close to its:
freezing point
NFPA® 14, Standard for the Installation of Standpipes and Hose Systems, establishes three classes of standpipe systems that are based on the:
intended use of the hose stations or discharge outlets.
A pump is said to operating at churn when it:
is running but all discharges are closed
A benefit of water-mist fire suppression systems compared to traditional sprinkler systems is the:
limited amount of water used.
Sprinkler temperature ratings that are too low for the operating conditions will result in:
malfunction or accidental activation.
Smothering occurs when:
oxygen is excluded from the fire.
The first principle of pressure states that fluid pressure is ___ to any surface on which it acts.
perpendicular
For the smoke management systems in buildings in their response area, it is imperative that firefighters understand the overall operations, functionality, and:
power supply.
Dry-barrel hydrants should always be completely open when in use to:
prevent erosion at the hydrant's base
An advantage to having separate domestic and fire protection piping arrangements in a private water supply system is the:
property owner has control.
A device that introduces the correct amount of foam concentrate into a water stream to make a foam solution is the foam:
proportioner.
Thermal or chemical decomposition of fuel because of heat that generally results in the lowered ignition temperature of the material is known as:
pyrolysis
An added benefit to smoke management systems in addition to reducing occupant deaths and injuries and aiding in the safety of firefighters is the:
reduction of property loss from smoke damage.
Dry chemical fire suppression systems should be used whenever rapid-fire suppression is required and:
reignition of fuel is unlikely
Every automatic sprinkler system must have a water supply of adequate volume, pressure and:
reliability.
A fast-response sprinkler that has a special low-mass fusible link or bulb that makes the time of temperature actuation much less than that of a conventional sprinkler is a(an):
residential sprinkler.
The component of a standpipe system that is used to transfer water from the supply to the discharge of the system is the:
riser.
A phenomenon that occurs when mixtures of alkaline-based chemicals and certain cooking oils come into contact, resulting in the formation of a soapy film is known as:
saponification
An advantage to using the vertically mounted split case centrifugal pump is that it:
saves floor space
A firefighters' smoke control station (FSCS) provides full monitoring and manual control capability over all:
smoke control systems and equipment.
A measure of the heat-absorbing capacity of a substance is:
specific heat.
Single-station smoke alarms are:
standalone devices.
A(an) ___ indicates an off-normal condition of the complete fire protection system.
supervisory signal
When foam extinguishes a fire by preventing the release of flammable vapors, this is known as:
suppressing
Automatic sprinkler systems help control a fire in its earlier stages, which allows fire fighting operations to be conducted in a more:
tenable atmosphere.
Notification appliances that use visual symbols to indicate a fire or emergency are known as:
textual.
The type and diameter of a hose in a standpipe station is governed by:
the classification of the standpipe system.
Personnel safety is the most serious problem involving carbon dioxide systems because:
the elimination of oxygen from a fire also eliminates breathable oxygen from the atmosphere
The size of the standpipe riser is determined by:
the height of the building and the standpipe service class.
The selection of the operating temperature of a sprinkler is determined based upon the maximum air temperature expected under normal conditions at:
the level of the sprinkler.
Because of the forces exerted by water moving within a water distribution system, all changes in direction of the underground piping must either be constructed as restrained joints or supported by:
thrust blocks.
The fiber packings on a horizontal split case centrifugal pump are:
water cooled
Inspections of wet-pipe systems are primarily concentrated in five areas: valves, sprinklers, piping, water supply, and:
waterflow alarms.
Law of latent heat of vaporization
weight of water and its heat-absorbing capacity.
The vertical subdivision of a standpipe that is determined by the pressure limitations of the system is the definition of a:
zone.