FPE FPE Fire Dynamics & Combustion Science

Question 1

What term describes the minimum temperature at which a liquid fuel produces enough vapor to ignite momentarily when exposed to an ignition source?

Accepted Answer

Flash point

Answer

Fire point

Answer

Auto-ignition temperature

Answer

Boiling point

Question 2

Which heat transfer mechanism is primarily responsible for igniting materials across a room before flashover occurs?

Accepted Answer

Radiation

Answer

Conduction

Answer

Convection

Answer

Advection

Question 3

What is the stoichiometric air-to-fuel ratio used for in fire dynamics calculations?

Accepted Answer

Calculating the theoretical amount of air needed for complete combustion

Answer

Determining sprinkler activation time

Answer

Estimating smoke toxicity levels

Answer

Setting fire alarm sensitivity thresholds

Question 4

Which fire growth model is most commonly referenced in NFPA and SFPE analyses to represent a t-squared fire?

Accepted Answer

Power-law (t²) model

Answer

Exponential growth model

Answer

Linear growth model

Answer

Logarithmic growth model

Question 5

What phenomenon occurs when a room fire suddenly and simultaneously ignites all exposed combustible surfaces?

Accepted Answer

Flashover

Answer

Backdraft

Answer

Flameover

Answer

Rollover

Question 6

Buoyancy-driven smoke movement in a high-rise building is primarily caused by which effect?

Accepted Answer

Stack effect

Answer

Venturi effect

Answer

Coandă effect

Answer

Bernoulli effect