NAFA CAFS EXAM || MOST RECENT EXAM 2026/27
ACTUAL COMPLETE REAL EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+ | GUARANTEED SUCCESS!! NEWEST
EXAM | JUST RELEASED!!
What are the three ways to control molecular contaminants? -
ANSWER-Source
control, ventilation/dilution,
removal control
What is straining? - ANSWER-occurs when the smallest
dimension of dust
particle is greater than the distance between adjoining
media fibers
What 3 factors affect mechanical filter selection? -
ANSWER-efficiency,
pressure drop,
capacity
What are the active charged media types? - ANSWER-
Triboelectric charging,
corona charging, charging by
induction
,Categories of impingement filters - ANSWER-panel,
washable, roll, and lint
filters
Having larger fibers on the air entering side and smaller
fibers on the air exit
side is called? - ANSWER-
Graduating density
Baffle grease filters must meet the requirements of NFPA
standard - ANSWER-
96
Minipleats have more media than most extended surface
filters providing two
advantages - what are they - ANSWER-lower initial pressure
drop and longer
life in
service
Two types of gasketing for HEPA's are? - ANSWER-closed cell
neoprene and
non newtonian gel
seal
ANSI/ASHREA 52.2 averages particles sized in how many
broad composite
, categories - ANSWER-(3) E1, E2
and E3
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
What is the name of the current European Air Filter
Standard? - ANSWER-
EN779:2002
Name two types of cleanrooms - ANSWER-non- unidirectional
(conventional)
and unindirectional
(laminar flow)
A breather filter protects content of? - ANSWER-storage tanks
- air moving in
and out of the
tank
Gas turbine supply air must be free of 5 micrometer particles
because? - ANSWER-they stick to and hurt the turbine blades -
10 micron particles erode the blades
Two main methods for molecular contaminant removal
are? - ANSWER-
ACTUAL COMPLETE REAL EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A+ | GUARANTEED SUCCESS!! NEWEST
EXAM | JUST RELEASED!!
What are the three ways to control molecular contaminants? -
ANSWER-Source
control, ventilation/dilution,
removal control
What is straining? - ANSWER-occurs when the smallest
dimension of dust
particle is greater than the distance between adjoining
media fibers
What 3 factors affect mechanical filter selection? -
ANSWER-efficiency,
pressure drop,
capacity
What are the active charged media types? - ANSWER-
Triboelectric charging,
corona charging, charging by
induction
,Categories of impingement filters - ANSWER-panel,
washable, roll, and lint
filters
Having larger fibers on the air entering side and smaller
fibers on the air exit
side is called? - ANSWER-
Graduating density
Baffle grease filters must meet the requirements of NFPA
standard - ANSWER-
96
Minipleats have more media than most extended surface
filters providing two
advantages - what are they - ANSWER-lower initial pressure
drop and longer
life in
service
Two types of gasketing for HEPA's are? - ANSWER-closed cell
neoprene and
non newtonian gel
seal
ANSI/ASHREA 52.2 averages particles sized in how many
broad composite
, categories - ANSWER-(3) E1, E2
and E3
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
What is the name of the current European Air Filter
Standard? - ANSWER-
EN779:2002
Name two types of cleanrooms - ANSWER-non- unidirectional
(conventional)
and unindirectional
(laminar flow)
A breather filter protects content of? - ANSWER-storage tanks
- air moving in
and out of the
tank
Gas turbine supply air must be free of 5 micrometer particles
because? - ANSWER-they stick to and hurt the turbine blades -
10 micron particles erode the blades
Two main methods for molecular contaminant removal
are? - ANSWER-
