CFM Fire Behavior & Combustion Principles

Question 1

What are the three components of the fire triangle?

Accepted Answer

Heat, fuel, and oxygen

Answer

Fuel, spark, and air

Answer

Heat, combustion, and air

Answer

Oxygen, carbon, and heat

Question 2

The lowest temperature at which a liquid produces enough vapor to ignite momentarily when exposed to an open flame is called:

Accepted Answer

Flash point

Answer

Auto-ignition temperature

Answer

Boiling point

Answer

Combustion threshold

Question 3

Which type of heat transfer occurs when heat moves through direct physical contact between materials?

Accepted Answer

Conduction

Answer

Convection

Answer

Radiation

Answer

Pyrolysis

Question 4

The phenomenon where all combustible materials in a confined space simultaneously ignite due to accumulated radiant heat is called:

Accepted Answer

Flashover

Answer

Backdraft

Answer

Rollover

Answer

Pyrolysis

Question 5

Which class of fire involves combustible metals such as magnesium, sodium, and titanium?

Accepted Answer

Class D

Answer

Class A

Answer

Class B

Answer

Class C

Question 6

What term describes the transfer of heat through electromagnetic waves without requiring a physical medium or direct contact?

Accepted Answer

Radiation

Answer

Conduction

Answer

Convection

Answer

Transmission

Question 7

Which statement correctly describes the minimum concentration of flammable vapor in air required to sustain combustion?

Accepted Answer

It is called the lower explosive limit (LEL)

Answer

It is called the upper explosive limit (UEL)

Answer

It is called the flash point

Answer

It is called the auto-ignition temperature