Book 83

Question 1

Which heat transfer is most responsible for fire spread?

Answer 1

Convection

Question 2

Transfer of heat by some circulating medium describes what

Answer 2

Convection

Question 3

Incipient growth of fire oxygen levels are approx

Answer 3

21 percent

Question 4

Ignition temp for ordinary combustibles is typically what

Answer 4

300-1000 degrees

Question 5

ESB also has the follow up investigation responsibility when loss is less than what

Answer 5

25k

Question 6

Combustible liquids have a flash point above what degree

Answer 6

100

Question 7

Chemical decomposition of matter thought the action of heat is called what

Answer 7

Pyrolysis

Question 8

Arson provides minutes fire service investigators on a what hour basis

Answer 8

24

Question 9

Amount of heat required to raise one lb of water 1 degree is called what

Answer 9

BTU

Question 10

An explosive breaking off a piece of masonry is called what

Answer 10

Spalding

Question 11

Amount of heat released during the complete oxidation of a substance is called what

Answer 11

Heat of combustion

Question 12

Type 1 buildings are called what

Answer 12

Fire resistive non combustible concrete steel

Question 13

Total number of BTU which might be evolved during a fire best describes what

Answer 13

Fire load

Question 14

A light bulb exposed to what temp will swell towards heat

Answer 14

900 degrees

Question 15

Free burning phase fully developed fire oxygen levels are approximately what to what percent

Answer 15

16-18

Question 16

Ignition temp of carbon monoxide is what

Answer 16

1128

Question 17

Ballast transformers found in fluorescent lights life expectancy

Answer 17

15 years

Question 18

Average automobile contains over how many lbs of plastics which are derived from petroleum products

Answer 18

300 lbs

Question 19

Pipe bombs are low order explosives which have how many feet per second velocity

Answer 19

3000 feet per second or less

Question 20

Electrical switches rated at 15 amps can carry 30 amperes up to how many mins

Answer 20

2 mins

Question 21

Cigarettes smoker fires typically take from how long to how long to develop into free burning phase

Answer 21

20 mins -2 hours

Question 22

Many televisions operate at up to how many volts in some areas within the set

Answer 22

32000

Question 23

Any combustible or flammable materials used to spread fire from one area to another is called

Answer 23

A trailer

Question 24

The primary responsibility to determine cause of fires is who’s

Answer 24

ESB

Question 25

Determining most probable cause of fire rests with who

Answer 25

IC

Question 26

Specific gravity defined as what

Answer 26

Ratio of weight of a solid or liquid substance to the weight of an equal amount of water

Question 27

Ignition temp is what

Answer 27

Minimum temperature to which a substance must be heated in air in order to initiate or cause combustion independently of the heating element or source

Question 28

Flash point is what

Answer 28

Minimum temp at which a liquid gives off vapors in sufficient concentrations to form an ignitable mixture with air near the surface of liquid

Question 29

Vapor density means what

Answer 29

Less than 1 is lighter than air Greater than one is heavier than air

Question 30

3 phases of fire

Answer 30

Incipient Free burning Smoldering

Question 31

Type 2 building

Answer 31

Non combustible resistive one hour or no hour

Question 32

Type 3 building

Answer 32

Ordinary construction

Question 33

Type 4 building

Answer 33

Heavy timber

Question 34

Type 5 building

Answer 34

Wood frame

Question 35

Cigarettes may not ignite dry vegetation unless RH is under what percent

Answer 35

22

Question 36

Temps generated by cigarette ash

Answer 36

760 on outside of ash 1440 on the inside of ash