NAFI CFEI EXM 2023-2024 ACTUAL EXAM 200+
QUESTIONS AND CORRECT ANSWERS (100%
VERIFIED ANSWERS) |AGRADE
Fuses and circuit breakers provide protection against electrical short circuits,
ground/earth faults,and load currents that might be damaging (i.e. overloads) to the
building electrical system.Properly functioning circuit protection may allow the
elimination of the buildings wiring system as a potential cause of the fire.
a.True
b.False – ANSWER- true
In pre-flashover conditions the primary heat transfer mechanism for fire spread
through a
compartment is radiation.
a.True
b.False – ANSWER- false
In a compartment, flashover occurs because convective heat energy raises
combustible to their auto-ignition temperature.
a.True
b.False – ANSWER- false
Combustion may continue with available oxygen concentrations lower than 1
percent.
a.True
b.False – ANSWER- true
The way structures react in a fire often influence how the fire grows and spreads as
well as how theymaintain their structural integrity during the fire. Therefore, the
fire investigator should considerthe type of structure and method of construction
when completing the analysis of fire growth and spread as a part of their fire
investigation.
a.True
b.False – ANSWER- true
Materials which have been properly treated with flame-retardants will not undergo
pyrolysis andfor this reason will not ignite.
a.True
b.False – ANSWER- false
Data that is based on observation or experience and can be verified is called:
a.Anecdotal data
b.Empirical data
c.Qualitative data
d.Categorical data – ANSWER- empirical
Inductive reasoning is when all available empirical data is analyzed using the
investigator’s experience, training, knowledge and expertise.
a.True
b.False – ANSWER- true
Testing of a hypothesis by comparing the investigators hypothesis to all known
facts is using____________ reasoning.
a.Deductive
b.Inductive
c.Both A and B
d.Neither A or B – ANSWER- deductive reasoning
Which of the following can be defined as a fuel gas?
a.Natural gas
b.Liquefied petroleum gas
c.Manufactured gases
d. all of the above – ANSWER- all of the above
Prior to conducting an on scene investigation many things should be identified,
including:
a.Date and time of incident
b.Size and complexity of the incident
c.Purpose of the investigation
d.All of the above – ANSWER- all of the above
Luminescent flame temperatures are dependant on the fuel to oxygen ratio.
a.True
b.False – ANSWER- true
The investigative tool used to graphically or in a narrative manner depict events
relating to a fire or explosion in chronological order is called:
a.Timeline
b.Systems analysis
c.Fault tree
d.Computer modeling – ANSWER- timeline
A diagram that places, in a logical sequence, the conditions and chains of events
that are necessaryfor a fire or explosion to occur is called:
a.Timeline
b.Systems analysis
c.Fault tree
d.Computer modeling – ANSWER- Fault tree
Probable cause is not needed to obtain an administrative search warrant.
a.True
b.False – ANSWER- true
Heat transfer to another body or within a body by direct contact is called:
a.Conduction.
b.Convection.
c.Radiation.
d.Pyrolysis. – ANSWER- conduction
Protected areas result from an object or item prohibiting the products of
combustion from depositingon materials which the object protects.
a.True
b.False – ANSWER- true
A deflagration resulting from the sudden introduction of air into a confined space
containing oxygendeficient products of incomplete combustion.
a.Flashover
b.Flameover
c.Smoke Explosion
d.Backdraft – ANSWER- backdraft
What does the “V” in V-pattern represent?
a.Vector – pattern
b.Virtual – pattern
c.The geometric shape of the pattern
d.Represents the name of the first individual who recognized the pattern –
ANSWER- the geometric shape of the pattern
Which of the following is NOT one of the three elements of arson?
a.There has been burning of property
b.The burning is incendiary in origin
c.The burning is shown to be started with malice with the intent of destroying
property
d.There is a gasoline can found on the premises – ANSWER- There is a gasoline
pattern found on the premises
A BLEVE is a type of explosion involving the ignition of a dispersed vapor cloud?
a.True
b.False – ANSWER- false
Adequate debris removal is essential in an origin investigation?
a.True
b.False – ANSWER- true
The court usually permits the fire and explosion investigator to refresh his memory
from his noteswhile testifying in a deposition or trial?
a.True
b.False – ANSWER- true
In a fire, the human body is completely consumed?
a.True
b.False – ANSWER- false
Fire deaths can occur from:
a.Inhalation of hot gases
b.Inhalation of toxic gases
c.Thermal Burns
d.All of the Above – ANSWER- all of the above
CODE
A standard that is an extensive compilation of provisions covering broad subject
matter or that is suitable for adoption into law independently of other codes and
standards.
GUIDE