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Practice Exam Questions - Bank 3

1. The rate of heat produced during combustion is a function of: (Brauer, 228)
a. rate of combustion
b. nature of fuel
c. oxygen content
d. humidity
2. What happens to the rate of heat production when high pressure air or gases with an oxygen content are applied to combustion? (Brauer, 228)
a. increases
b. decreases
c. remains the same
d. truncates
3. What is the total heat produced during a fire involving 20 lbs of gasoline with a heat of combustion value of 19,000 BTU/lb? (Brauer, 228)
a. 90,500 BTU
b. 190,000 BTU
c. 380,000 BTU
d. 720,000 BTU
4. A fire involving 20 lbs of gasoline with a heat of combustion value of 19,000 BTU/lb would produce the same heat as: (Brauer, 228)
a. 10 lbs of oil with a heat of combustion of 10,000 BTU
b. 10 lbs of diesel fuel with a heat of combustion of 26,000 BTU
c. 30 lbs of wood with a heat of combustion of 5,500 BTU
d. 50 lbs of paper with a heat of combustion of 7,200 BTU
5. Which formula below is used to determine the total heat produced in a fire? (Brauer, 228)
a. fuel weight (lbs) x heat of combustion (BTU)
b. (fuel weight (lbs) x heat of combustion)/rate of combustion (min.)
c. (rate of combustion (sec) x heat of combustion)/weight of fuel (lbs.)
d. (rate of combustion (sec) x heat of combustion)/200,000
6. Heat is transferred from the fire to the surrounding area by all of the following, EXCEPT: (Brauer, 228)
a. convection
b. transference
c. conduction
d. radiation
7. Heat is transferred from most fires to the surrounding area by: (Brauer, 228)
a. convection
b. transference
c. conduction
d. radiation
8. The upward movement of hot gases is driven by what condition? (Brauer, 228)
a. geometry
b. air flow
c. thermal gradient
d. temperature
9. Radiation of heat is highly dependent on which of the following? (Brauer, 228)
a. geometry
b. air flow
c. thermal gradient
d. temperature
10. A nearby building may actually burst into flames if too much heat is absorbed by: (Brauer, 228)
a. radiative transfer
b. rapid air flow
c. intense thermal gradient
d. rapid temperature rise

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