Exam Questions And Answers
The formation of smoke into layers as a result of differences in density with respect to height with low
density layers on the top and high density layers on the bottom is known as: - ANS -stratification.
Which system of smoke control is provided by barriers with sufficient fire endurance to provide
protection against fire spread? - ANS -Passive
Stairwell pressurization may be required by the building codes and: - ANS -the authority having
jurisdiction.
The majority of fire deaths are due to: - ANS -Smoke
For the smoke management systems in buildings in their response area, it is imperative that firefighters
understand the overall operations, functionality, and: - ANS -Power supply
Which is a toxic material produced in the combustion of materials containing nitrogen and is a
significant by-product of the combustion of polyurethane foam? - ANS -Hydrogen cyanide (HCN)
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)? - ANS -Carbon monoxide (CO)
The _____ of smoke control uses mechanical fans and ventilation to create a pressure difference across
a barrier such as a wall. - ANS -pressurization method
Which method is typically used for openings in a vertical surface, such as doors or hallways, and where
the opening is relatively small in comparison to the size of the surface? - ANS -Opposed airflow method
, What is designed to limit the movement of smoke from one compartment of a building to another? -
ANS -Zoned smoke control
Which acts as a simple asphyxiant displacing oxygen? - ANS -Carbon dioxide (CO2)
A firefighters' smoke control station (FSCS) provides full monitoring and manual control capability over
all: - ANS -smoke control systems and equipment.
Which testing is conducted through the fire alarm or smoke management panel that controls the
system? - ANS -Automatic component testing
The opposed airflow method of smoke control has been used successfully in: - ANS -highway tunnels.
Negative-pressure systems: - ANS -remove smoke from the building.
In the 1980 MGM Hotel fire in Las Vegas, most of the fatalities were found in the: - ANS -upper floors.
Thermal or chemical decomposition of fuel because of heat that generally results in the lowered ignition
temperature of the material is known as: - ANS -Pyrolysis
Which type of pressurization system supplies air to the zones adjacent to the zone of the fire's origin? -
ANS -Positive-pressure system
During a fire event, the smoke dilution method can be used to improve conditions: - ANS -within a space
by reducing the concentration of smoke through supply and exhaust ventilation.
Which of these is a potential advantage of nondedicated smoke control systems? - ANS -Less chance for
component failure due to normal use and maintenance
HVAC ductwork systems are often equipped with duct _____ that will deactivate fans and shut smoke
dampers in an effort to limit smoke spread. - ANS -Smoke detectors