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NAFA CAFS Test Exam fully solved & updated 2025-
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NAFA CAFS /Exam NAFA CAFS Sample Questions MAAE 2700 CW
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Terms in this set (81)
Aerosols cover a wide range of sizes. True or false? True.
NAFA Guide to Air Filtration, 5th ed. 2014, page 1.2
A micron is approximately ___________ of an inch. 1/25,400".
NAFA Guide to Air Filtration, 5th ed. 2014, page 1.2
Particle counters used to use tungsten light, and were Lasers.
limited to measuring particle sizes down to 0.3 microns.
Newer units, using ___________ as a source of light, have the NAFA Guide to Air Filtration, 5th ed. 2014, page 1.5
capability of counting particles smaller than 0.1 micron.
If you have a 20x24x12 filter, with 48sq. ft. of media, 41.66fpm.
placed in an airstream of 2000cfm, what would your
velocity(fpm) be? V(fpm)=Q(cfm)/A(Sq. ft. of media)
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.1
, Electronic Air Cleaners are externally powered devices. True.
True or false?
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.3
The thicker the filter media and the closer the Greater.
orientation of fibers, the ________ the possibility of
collision by a fiber. NAFA Guide to Air Filtration, 5th ed. 2014, page 2.4
Impingement filters are frequently treated with True.
adhesives that coat the fibers and create a bond
between the particle and the fiber. True or false? NAFA Guide to Air Filtration, 5th ed. 2014, page 2.5
A dipole moment is when there is a ________ _____________ of Greater concentration.
electrons at ____ _______ of a molecule than there is at One end.
____________. Another.
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.6
The strongest force occurs between particles and Approximately the same diameter.
fibers that are ___________ ____ _____ ________.
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.6
What is capacity? The amount of air that a filter can handle. (cfm)
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.7
What is dust holding capacity? The amount of dust retained by a filter to its final recommended pressure drop.
NAFA Guide to Air Filtration, 5th ed. 2014, page 17.5
A panel filter has a media velocity that is lower than it's False. A panel filter has the same media velocity as face velocity.
face velocity. True or false?
NAFA Guide to Air Filtration, 5th ed. 2014, page 3.1
Airborne particles are attracted to fibers that have a Humid.
charge opposite of their own. This attraction is
diminished when the air is _______, and as particles build NAFA Guide to Air Filtration, 5th ed. 2014, page 3.3
up on the fibers.
Lofted microglass media(glass mat) is manufactured by Colored binder.
spraying the fibers onto a _______ _________, and collected
on a conveyor in the form of a mat. False. Backing material can be applied at the time the mat is formed of the mat
and backer can be combined just before the incorporation into a filter.
They require backing material to provide physical
support. Backing can not be applied at the time the mat NAFA Guide to Air Filtration, 5th ed. 2014, page 4.2
is formed. True or false?
NAFA CAFS Test Exam fully solved & updated 2025-
2026(latest version verified for accuracy) |
2024\2025Latest!!
Leave the first rating
Save
Students also studied
Flashcard sets Study guides
NAFA CAFS /Exam NAFA CAFS Sample Questions MAAE 2700 CW
126 terms Teacher 73 terms Teacher 104 terms Te
jacki2085 Preview john_mungai7 Preview joshuawesonga752 Preview
Terms in this set (81)
Aerosols cover a wide range of sizes. True or false? True.
NAFA Guide to Air Filtration, 5th ed. 2014, page 1.2
A micron is approximately ___________ of an inch. 1/25,400".
NAFA Guide to Air Filtration, 5th ed. 2014, page 1.2
Particle counters used to use tungsten light, and were Lasers.
limited to measuring particle sizes down to 0.3 microns.
Newer units, using ___________ as a source of light, have the NAFA Guide to Air Filtration, 5th ed. 2014, page 1.5
capability of counting particles smaller than 0.1 micron.
If you have a 20x24x12 filter, with 48sq. ft. of media, 41.66fpm.
placed in an airstream of 2000cfm, what would your
velocity(fpm) be? V(fpm)=Q(cfm)/A(Sq. ft. of media)
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.1
, Electronic Air Cleaners are externally powered devices. True.
True or false?
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.3
The thicker the filter media and the closer the Greater.
orientation of fibers, the ________ the possibility of
collision by a fiber. NAFA Guide to Air Filtration, 5th ed. 2014, page 2.4
Impingement filters are frequently treated with True.
adhesives that coat the fibers and create a bond
between the particle and the fiber. True or false? NAFA Guide to Air Filtration, 5th ed. 2014, page 2.5
A dipole moment is when there is a ________ _____________ of Greater concentration.
electrons at ____ _______ of a molecule than there is at One end.
____________. Another.
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.6
The strongest force occurs between particles and Approximately the same diameter.
fibers that are ___________ ____ _____ ________.
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.6
What is capacity? The amount of air that a filter can handle. (cfm)
NAFA Guide to Air Filtration, 5th ed. 2014, page 2.7
What is dust holding capacity? The amount of dust retained by a filter to its final recommended pressure drop.
NAFA Guide to Air Filtration, 5th ed. 2014, page 17.5
A panel filter has a media velocity that is lower than it's False. A panel filter has the same media velocity as face velocity.
face velocity. True or false?
NAFA Guide to Air Filtration, 5th ed. 2014, page 3.1
Airborne particles are attracted to fibers that have a Humid.
charge opposite of their own. This attraction is
diminished when the air is _______, and as particles build NAFA Guide to Air Filtration, 5th ed. 2014, page 3.3
up on the fibers.
Lofted microglass media(glass mat) is manufactured by Colored binder.
spraying the fibers onto a _______ _________, and collected
on a conveyor in the form of a mat. False. Backing material can be applied at the time the mat is formed of the mat
and backer can be combined just before the incorporation into a filter.
They require backing material to provide physical
support. Backing can not be applied at the time the mat NAFA Guide to Air Filtration, 5th ed. 2014, page 4.2
is formed. True or false?
