NAFA CAFS Practice Exam Questions
and Correct Answers Top Rated Latest
Version
Question 1
Why do HVAC testing
Answer>>
Determine efficiency of the particle size removal, amount of
contaminate removed, and pressure drop
Question 2
A 2 stage air cleaner utilizes what 2 things?
Answer>>
An Ionizer section, a collector section
Question 3
ANSI/ASHREA 52.2 what are the ranges of these averages
Answer>>
E1=.3 to 1.0 E2=1.0 to 3 E3= 3 to 10 microns
Question 4
A drawback of PCO may be the?
Answer>>
high initial cost of equipment
Page 1 of 77
,Question 5
The size of the particles in outdoor air are mainly what size?
Answer>>
1 micrometer
Question 6
What are the IAQ testing applications
Answer>>
Particulate contaminants, Gas phase, systems integrity,
comfort parameters
Question 7
Min demonstrated overspray filter eff must be at least
Answer>>
98%
Question 8
What are the categories of enclosed finishing booths
Answer>>
cross draft and down draft
Question 9
What are the types of Microorganisms
Answer>>
Virus, Bacteria, Fungi
Question 10
Page 2 of 77
,What does the effectiveness of impingements filters depend
on?
Answer>>
Dust particle size, density of the dust, depth of the filter,
velocity of the airflow
Question 11
HEPA filter testing consists of?
Answer>>
Penetration converted to overall efficiency including gaskets,
sealing and framing, initial resistance and 2 flow testing (leak
test)
Question 12
What are the two general categories of Enclosed Finish
Booths?
Answer>>
cross draft and down draft
Question 13
Name the different HEPA frame material
Answer>>
Partical board, plywood, extruded alum, formed sheet metal
Question 14
what is the function of ceiling diffusion media
Answer>>
clean the air of particles 5 micron and larger, diffuse he air
Page 3 of 77
, evenly across the booth
Question 15
The air we breath is composed mainly of?
Answer>>
Nitrogen
Question 16
When exhaust air exceeds intake air must be provided to
replace the difference
Answer>>
Make up air
Question 17
What are two types of filter options
Answer>>
partial bypass, total retention
Question 18
Dust separation is used for two objectives?
Answer>>
Recover valuable product from plant processes that generate
dust 2. Clean air to stay in compliance with OSHA and EPA
requirements
Question 19
What are the styles of Dust Separation equipment
Page 4 of 77
and Correct Answers Top Rated Latest
Version
Question 1
Why do HVAC testing
Answer>>
Determine efficiency of the particle size removal, amount of
contaminate removed, and pressure drop
Question 2
A 2 stage air cleaner utilizes what 2 things?
Answer>>
An Ionizer section, a collector section
Question 3
ANSI/ASHREA 52.2 what are the ranges of these averages
Answer>>
E1=.3 to 1.0 E2=1.0 to 3 E3= 3 to 10 microns
Question 4
A drawback of PCO may be the?
Answer>>
high initial cost of equipment
Page 1 of 77
,Question 5
The size of the particles in outdoor air are mainly what size?
Answer>>
1 micrometer
Question 6
What are the IAQ testing applications
Answer>>
Particulate contaminants, Gas phase, systems integrity,
comfort parameters
Question 7
Min demonstrated overspray filter eff must be at least
Answer>>
98%
Question 8
What are the categories of enclosed finishing booths
Answer>>
cross draft and down draft
Question 9
What are the types of Microorganisms
Answer>>
Virus, Bacteria, Fungi
Question 10
Page 2 of 77
,What does the effectiveness of impingements filters depend
on?
Answer>>
Dust particle size, density of the dust, depth of the filter,
velocity of the airflow
Question 11
HEPA filter testing consists of?
Answer>>
Penetration converted to overall efficiency including gaskets,
sealing and framing, initial resistance and 2 flow testing (leak
test)
Question 12
What are the two general categories of Enclosed Finish
Booths?
Answer>>
cross draft and down draft
Question 13
Name the different HEPA frame material
Answer>>
Partical board, plywood, extruded alum, formed sheet metal
Question 14
what is the function of ceiling diffusion media
Answer>>
clean the air of particles 5 micron and larger, diffuse he air
Page 3 of 77
, evenly across the booth
Question 15
The air we breath is composed mainly of?
Answer>>
Nitrogen
Question 16
When exhaust air exceeds intake air must be provided to
replace the difference
Answer>>
Make up air
Question 17
What are two types of filter options
Answer>>
partial bypass, total retention
Question 18
Dust separation is used for two objectives?
Answer>>
Recover valuable product from plant processes that generate
dust 2. Clean air to stay in compliance with OSHA and EPA
requirements
Question 19
What are the styles of Dust Separation equipment
Page 4 of 77
