CFPS - Certified Fire Protection Specialist Fire Dynamics and Behavior Questions and Answers

Question 1

A fire in a large, open-plan office has consumed most of the available workstations (fuel) in the center of the space.
The fire's growth rate is now visibly decreasing, even though the building's HVAC system is still introducing fresh air.
This fire is BEST described as being in what state?

Accepted Answer

Fuel-limited

Answer

Ventilation-limited

Answer

Incipient stage

Answer

Fully developed

Question 2

Which of the following is the single most important parameter for characterizing the size and hazard of a fire?

Accepted Answer

Heat Release Rate (HRR)

Answer

Flame height

Answer

Temperature

Answer

Smoke opacity

Question 3

A fire crew is called to a residence with thick, dark smoke puffing from the eaves and around window frames, which are stained brown. There is no visible flame, and the windows are intact but appear dark. When the front door is forced open, there is a sudden and violent eruption of fire that extends outwards. This event is known as a:

Accepted Answer

Backdraft

Answer

Flashover

Answer

Rollover

Answer

Smoke explosion

Question 4

The transfer of heat through electromagnetic waves, which can preheat and ignite combustibles at a distance without direct contact or an intervening medium, is known as:

Accepted Answer

Radiation

Answer

Conduction

Answer

Convection

Answer

Direct flame impingement

Question 5

What phenomenon marks the transition of a compartment fire from the growth stage to the fully developed stage, where all combustible surfaces are simultaneously ignited?

Accepted Answer

Flashover

Answer

Backdraft

Answer

Flameover

Answer

Ignition

Question 6

In a ventilation-limited fire, what is the primary factor controlling the heat release rate?

Accepted Answer

The amount of oxygen available through openings

Answer

The chemical composition of the fuel

Answer

The surface area-to-mass ratio of the fuel

Answer

The ambient temperature of the compartment

A fire in a large, open-plan office has consumed most of the available workstations (fuel) in the center of the space.The fire's growth rate is now visibly decreasing, even though the building's HVAC system is still introducing fresh air.This fire is BEST described as being in what state?

A fire in a large, open-plan office has consumed most of the available workstations (fuel) in the center of the space.
The fire's growth rate is now visibly decreasing, even though the building's HVAC system is still introducing fresh air.
This fire is BEST described as being in what state?