NAFI Test Questions with Verified Answers
The basic methodology of the fire investigation should rely a. scientific method
on the use of a ______________________ and attention b. scientific examination
to all relevant details. c. scientific survey
d. scientific theory - Answer a. scientific method
a. systematic approach
b. approximation approach
c. methodology approach
d. general approach - Answer a. systematic ____________________ are the visible or measurable
approach physical effects that remain after a fire. These include
thermal effects on materials, such as charring, oxidation,
consumption of combustibles, smoke and soot deposits,
distortion, melting, color changes, changes in character of
With few exceptions, the proper methodolgy for a fire or materials, structural collapse, and other effects.
explosion investigation is to first
_____________________ then investigate the cause, a. Fire arrows
circumstances, conditions, or agencies that brought the b. Fire pointers
ignition source, fuel, and oxidant together. c. Fire patterns
d. Flammable patterns - Answer c. Fire patterns
a. determine responsibility
b. determine and establish origin(s)
c. determine if it is a criminal action
d. all of the above - Answer b. determine and Distortion, breakage, deterioration, or other fault in an
establish origin(s) item, component, system, assembly, or structure that
results in unsatisfactory performance of the function for
which it was designed is called ________________.
The process of determining the origin, cause, a. broken
development, and responsibility as well as the failure b. distorted
analysis of a fire or explosion is the definition of c. failure
_________________________. d. faulty - Answer c. failure
a. fire investigation
b. fire scene reconstruction
c. fire evaluation Vehicle fire inspections may present many other situations
d. fire analysis - Answer d. fire analysis that pose safety hazards to the investigator. These can
include:
a. fuel leaks
The process of determining the origin, cause, and b. expelled lubricants
responsibility for a fire or explosion is c. electrical energy stored in the battery
___________________________. d. all of the above - Answer d. all of the above
a. fire analysis
b. fire investigation
c. fire scene survey The burn or damage patterns remaining on the body
d. fire evaluation - Answer b. fire investigation panels and in the interior of the vehicle are primarily used
to locate the ______________________.
a. origin of the fire
The _____________________ is the systematic pursite of b. potential ignition sources
knowledge involving the recognition and formulation of a c. fuel loads
problem, the collection of data through observation and d. all of the above - Answer d. all of the above
experiment, and the formulation and testing of a
hypothesis.
1/8
, NAFI Test Questions with Verified Answers
A wide variety of materials and substances may serve as b. battery to alternator
the first materials ignited in motor vehicle fires. These c. battery to ignition
include engine fuels; transmission,·power steering, and d. all of the above - Answer d. all of the above
brake fluids; coolants; lubricants; and the vehicle interior
materials or cargo. Once a fire is started, any of these
materials may contribute as a secondary fuel, affecting
the fire growth rate and the ultimate damage sustained. When the ignition is off and the vehicle is not running,
vehicle circuits will still supply current to _____________.
a. True
b. False - Answer a. True a. clock
b. lights
c. power door locks
d. all of the above -
Answer d. all of the above (clock
Solid fuels are less common than liquids and gasses as is not listed)
the first materials ignited in motor vehicle fires. The
exception would be scenarios where overloaded wiring or
smoking materials are possible ignition sources or where
the vehicle is subject to an exposure fire. Protection of electrical circuits in motor vehicles is
provided by:
a. True
b. False - Answer a. True a. fuses
b. circuitbreakers
c. fusible links
d. all of the above - Answer d. all of the above
In most instances, the sources of ignition energy in motor
vehicle fires are the same as those associated with
structural fires, arcs, overloaded wiring, open flames, and
smoking materials. There are, however, some unique Electrical problems in circuits protected by fuses cannot
sources that should be considered, such as the hot start a fire.
surfaces of the:
a. True
a. catalytic converter b. False - Answer b. False
b. turbocharger
c. manifold
d. all of the above - Answer d. all of the above
The most common open flame in a carburated vehicle fire
is:
When the engine is not running, the primary source of a. lighted match
electrical energy in a motor vehicle is the b. pilot flames or operating burners
_____________________. c. catalytic converter
d. a backfire through the carburator - Answer d. a
a. alternator backfire through the carburetor (bad question)
b. distributor
c. battery
d. fuel pump - Answer c. battery (can also be other
components) There are two basic fuel systems used in gasoline
powered motor vehicles:
a. vacuum/low pressure carbureted system
14. When the ignition is off and the vehicle is not running, b. high pressure fuel injected system
vehicle circuits having a+ 12 volt potential will still supply c. both a & b
current from ______________ to ______________. d. neither a or b - Answer c. both a & b
a. battery to starter
2/8
The basic methodology of the fire investigation should rely a. scientific method
on the use of a ______________________ and attention b. scientific examination
to all relevant details. c. scientific survey
d. scientific theory - Answer a. scientific method
a. systematic approach
b. approximation approach
c. methodology approach
d. general approach - Answer a. systematic ____________________ are the visible or measurable
approach physical effects that remain after a fire. These include
thermal effects on materials, such as charring, oxidation,
consumption of combustibles, smoke and soot deposits,
distortion, melting, color changes, changes in character of
With few exceptions, the proper methodolgy for a fire or materials, structural collapse, and other effects.
explosion investigation is to first
_____________________ then investigate the cause, a. Fire arrows
circumstances, conditions, or agencies that brought the b. Fire pointers
ignition source, fuel, and oxidant together. c. Fire patterns
d. Flammable patterns - Answer c. Fire patterns
a. determine responsibility
b. determine and establish origin(s)
c. determine if it is a criminal action
d. all of the above - Answer b. determine and Distortion, breakage, deterioration, or other fault in an
establish origin(s) item, component, system, assembly, or structure that
results in unsatisfactory performance of the function for
which it was designed is called ________________.
The process of determining the origin, cause, a. broken
development, and responsibility as well as the failure b. distorted
analysis of a fire or explosion is the definition of c. failure
_________________________. d. faulty - Answer c. failure
a. fire investigation
b. fire scene reconstruction
c. fire evaluation Vehicle fire inspections may present many other situations
d. fire analysis - Answer d. fire analysis that pose safety hazards to the investigator. These can
include:
a. fuel leaks
The process of determining the origin, cause, and b. expelled lubricants
responsibility for a fire or explosion is c. electrical energy stored in the battery
___________________________. d. all of the above - Answer d. all of the above
a. fire analysis
b. fire investigation
c. fire scene survey The burn or damage patterns remaining on the body
d. fire evaluation - Answer b. fire investigation panels and in the interior of the vehicle are primarily used
to locate the ______________________.
a. origin of the fire
The _____________________ is the systematic pursite of b. potential ignition sources
knowledge involving the recognition and formulation of a c. fuel loads
problem, the collection of data through observation and d. all of the above - Answer d. all of the above
experiment, and the formulation and testing of a
hypothesis.
1/8
, NAFI Test Questions with Verified Answers
A wide variety of materials and substances may serve as b. battery to alternator
the first materials ignited in motor vehicle fires. These c. battery to ignition
include engine fuels; transmission,·power steering, and d. all of the above - Answer d. all of the above
brake fluids; coolants; lubricants; and the vehicle interior
materials or cargo. Once a fire is started, any of these
materials may contribute as a secondary fuel, affecting
the fire growth rate and the ultimate damage sustained. When the ignition is off and the vehicle is not running,
vehicle circuits will still supply current to _____________.
a. True
b. False - Answer a. True a. clock
b. lights
c. power door locks
d. all of the above -
Answer d. all of the above (clock
Solid fuels are less common than liquids and gasses as is not listed)
the first materials ignited in motor vehicle fires. The
exception would be scenarios where overloaded wiring or
smoking materials are possible ignition sources or where
the vehicle is subject to an exposure fire. Protection of electrical circuits in motor vehicles is
provided by:
a. True
b. False - Answer a. True a. fuses
b. circuitbreakers
c. fusible links
d. all of the above - Answer d. all of the above
In most instances, the sources of ignition energy in motor
vehicle fires are the same as those associated with
structural fires, arcs, overloaded wiring, open flames, and
smoking materials. There are, however, some unique Electrical problems in circuits protected by fuses cannot
sources that should be considered, such as the hot start a fire.
surfaces of the:
a. True
a. catalytic converter b. False - Answer b. False
b. turbocharger
c. manifold
d. all of the above - Answer d. all of the above
The most common open flame in a carburated vehicle fire
is:
When the engine is not running, the primary source of a. lighted match
electrical energy in a motor vehicle is the b. pilot flames or operating burners
_____________________. c. catalytic converter
d. a backfire through the carburator - Answer d. a
a. alternator backfire through the carburetor (bad question)
b. distributor
c. battery
d. fuel pump - Answer c. battery (can also be other
components) There are two basic fuel systems used in gasoline
powered motor vehicles:
a. vacuum/low pressure carbureted system
14. When the ignition is off and the vehicle is not running, b. high pressure fuel injected system
vehicle circuits having a+ 12 volt potential will still supply c. both a & b
current from ______________ to ______________. d. neither a or b - Answer c. both a & b
a. battery to starter
2/8
