CFEI Study Guide Questions with Complete Solutions
A reduction in air entrainment can result in... Correct Answers
Greater flame height
A reduction in ambient air being entrained into the thermal
plume does what Correct Answers Lessens the amount of
mixing of cooler ambient air with the thermal plume resulting in
less dilution and higher temp
AFCI Correct Answers
Ampacity Correct Answers The amapcity of the conductor is
the current in amps a conductor can carry continuously under the
conditions of use without exceeding its temperature rating
Apps are equal to? Correct Answers Coulombs per second
Are flame temperatures for accelerated fires higher than
ordinary fuels? Correct Answers No
Area of coverage range for sprinkler system Correct Answers
8.4m2 for high hazard areas, 21m2 for light hazard areas
Aspects of a building that can be changed during construction
without a permit Correct Answers Location of fire walls and
electrical wiring
AWG Correct Answers American Wire Gauge
,Better electrical conductors mean what, in regards to resistance?
Correct Answers Better conductors mean less resistance
BTU Correct Answers The quantity of heat required to raise
the temp. Of 1 lb of water by 1 degree F at a pressure of 1
atmosphere and temp of 60 degrees F
Bulbs below atmospheric pressure do what? Correct Answers
Less than 25 Watts. Distort inward away from the fire.
Bulbs whose internal pressure is above atmospheric pressure do
what? Correct Answers Bulge towards the fire: greater than 25
Watts
Calorie Correct Answers The amount of energy required to
raise the temperature of 1 g of water by 1 degree Celsius
Can biomass packages such as hay or compost self heat?
Correct Answers Yes, they can begin self heating from
biological activity
Can crazing be caused by rapid heating? Correct Answers No
Can fire ignite fuel packages through ceilings or walls? Correct
Answers Yes, it is possible for the heat of a fire to be conducted
through a wall or ceiling surface and to ignite wooden structural
membranes within the wall or ceiling
Can sprays/mists be ignited below flash point? Correct Answers
Yes
, Can the direction of burn be determined by the hole? Correct
Answers Yes the slope of the edges of the hole.
Carbon dioxide and water is produced when... Correct Answers
Complete combustion of hydrocarbon fuels containing only
hydrogen and carbon
Celcius Correct Answers Centigrade: based on the freezing
point of pure water being 0 degrees Celsius and the boiling point
100 degrees celsius
Charge does what in an electrical system? Correct Answers
Flows
Charge is measured in? Correct Answers Coulombs
Chemical oxidizers Correct Answers Ammonium nitrate
fertilizer (NH4NO3), potassium nitrate (KNO3), hydrogen
peroxide (H2O2)
Combustion explosion Correct Answers Premixed flame
propagation in a confined volume
Common class of materials that smolder include? Correct
Answers Wood, paper, lignocellulosic products
Common wire gauge for residential structures Correct Answers
10, 12, 14
Compare steel, aluminum, silver, and copper as conductors
Correct Answers 1. Silver
A reduction in air entrainment can result in... Correct Answers
Greater flame height
A reduction in ambient air being entrained into the thermal
plume does what Correct Answers Lessens the amount of
mixing of cooler ambient air with the thermal plume resulting in
less dilution and higher temp
AFCI Correct Answers
Ampacity Correct Answers The amapcity of the conductor is
the current in amps a conductor can carry continuously under the
conditions of use without exceeding its temperature rating
Apps are equal to? Correct Answers Coulombs per second
Are flame temperatures for accelerated fires higher than
ordinary fuels? Correct Answers No
Area of coverage range for sprinkler system Correct Answers
8.4m2 for high hazard areas, 21m2 for light hazard areas
Aspects of a building that can be changed during construction
without a permit Correct Answers Location of fire walls and
electrical wiring
AWG Correct Answers American Wire Gauge
,Better electrical conductors mean what, in regards to resistance?
Correct Answers Better conductors mean less resistance
BTU Correct Answers The quantity of heat required to raise
the temp. Of 1 lb of water by 1 degree F at a pressure of 1
atmosphere and temp of 60 degrees F
Bulbs below atmospheric pressure do what? Correct Answers
Less than 25 Watts. Distort inward away from the fire.
Bulbs whose internal pressure is above atmospheric pressure do
what? Correct Answers Bulge towards the fire: greater than 25
Watts
Calorie Correct Answers The amount of energy required to
raise the temperature of 1 g of water by 1 degree Celsius
Can biomass packages such as hay or compost self heat?
Correct Answers Yes, they can begin self heating from
biological activity
Can crazing be caused by rapid heating? Correct Answers No
Can fire ignite fuel packages through ceilings or walls? Correct
Answers Yes, it is possible for the heat of a fire to be conducted
through a wall or ceiling surface and to ignite wooden structural
membranes within the wall or ceiling
Can sprays/mists be ignited below flash point? Correct Answers
Yes
, Can the direction of burn be determined by the hole? Correct
Answers Yes the slope of the edges of the hole.
Carbon dioxide and water is produced when... Correct Answers
Complete combustion of hydrocarbon fuels containing only
hydrogen and carbon
Celcius Correct Answers Centigrade: based on the freezing
point of pure water being 0 degrees Celsius and the boiling point
100 degrees celsius
Charge does what in an electrical system? Correct Answers
Flows
Charge is measured in? Correct Answers Coulombs
Chemical oxidizers Correct Answers Ammonium nitrate
fertilizer (NH4NO3), potassium nitrate (KNO3), hydrogen
peroxide (H2O2)
Combustion explosion Correct Answers Premixed flame
propagation in a confined volume
Common class of materials that smolder include? Correct
Answers Wood, paper, lignocellulosic products
Common wire gauge for residential structures Correct Answers
10, 12, 14
Compare steel, aluminum, silver, and copper as conductors
Correct Answers 1. Silver
