NAFA CAFS Test Exam fully solved & updated
2026(latest version verified for accuracy)
Save
Terms in this set (81)
Aerosols cover a wide range of True.
sizes. True or false?
NAFA Guide to Air Filtration, 5th ed. 2014, page
1.2
A micron is approximately ___________ 1/25,400".
of an inch.
NAFA Guide to Air Filtration, 5th ed. 2014, page
1.2
Particle counters used to use Lasers.
tungsten light, and were limited to
measuring particle sizes down to NAFA Guide to Air Filtration, 5th ed. 2014, page
0.3 microns. Newer units, using 1.5
___________ as a source of light, have
the capability of counting particles
smaller than 0.1 micron.
If you have a 20x24x12 filter, with 41.66fpm.
48sq. ft. of media, placed in an
airstream of 2000cfm, what would V(fpm)=Q(cfm)/A(Sq. ft. of media)
your velocity(fpm) be?
NAFA Guide to Air Filtration, 5th ed. 2014, page
2.1
, Electronic Air Cleaners are True.
externally powered devices. True or
false? NAFA Guide to Air Filtration, 5th ed. 2014, page
2.3
The thicker the filter media and the Greater.
closer the orientation of fibers, the
________ the possibility of collision by NAFA Guide to Air Filtration, 5th ed. 2014, page
a fiber. 2.4
Impingement filters are frequently True.
treated with adhesives that coat the
fibers and create a bond between NAFA Guide to Air Filtration, 5th ed. 2014, page
the particle and the fiber. True or 2.5
false?
A dipole moment is when there is a Greater concentration.
________ _____________ of electrons at ____ One end.
_______ of a molecule than there is at Another.
____________.
NAFA Guide to Air Filtration, 5th ed. 2014, page
2.6
The strongest force occurs Approximately the same diameter.
between particles and 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
2026(latest version verified for accuracy)
Save
Terms in this set (81)
Aerosols cover a wide range of True.
sizes. True or false?
NAFA Guide to Air Filtration, 5th ed. 2014, page
1.2
A micron is approximately ___________ 1/25,400".
of an inch.
NAFA Guide to Air Filtration, 5th ed. 2014, page
1.2
Particle counters used to use Lasers.
tungsten light, and were limited to
measuring particle sizes down to NAFA Guide to Air Filtration, 5th ed. 2014, page
0.3 microns. Newer units, using 1.5
___________ as a source of light, have
the capability of counting particles
smaller than 0.1 micron.
If you have a 20x24x12 filter, with 41.66fpm.
48sq. ft. of media, placed in an
airstream of 2000cfm, what would V(fpm)=Q(cfm)/A(Sq. ft. of media)
your velocity(fpm) be?
NAFA Guide to Air Filtration, 5th ed. 2014, page
2.1
, Electronic Air Cleaners are True.
externally powered devices. True or
false? NAFA Guide to Air Filtration, 5th ed. 2014, page
2.3
The thicker the filter media and the Greater.
closer the orientation of fibers, the
________ the possibility of collision by NAFA Guide to Air Filtration, 5th ed. 2014, page
a fiber. 2.4
Impingement filters are frequently True.
treated with adhesives that coat the
fibers and create a bond between NAFA Guide to Air Filtration, 5th ed. 2014, page
the particle and the fiber. True or 2.5
false?
A dipole moment is when there is a Greater concentration.
________ _____________ of electrons at ____ One end.
_______ of a molecule than there is at Another.
____________.
NAFA Guide to Air Filtration, 5th ed. 2014, page
2.6
The strongest force occurs Approximately the same diameter.
between particles and 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
