Page 1 of 49
NAFA Certified Air Filter Specialist (CAFS) EXAM
TESTBANK ALL 250 QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR
QUESTION: A TB isolation room must be kept under a ____________ pressure.
a.) Positive
b.) Negative
c.) Laminar
d.) Static - ANSWER-b.) Negative
NAFA Guide to Air Filtration, 5th ed. 2014, page 10.8
QUESTION: All biological safety cabinets require periodic certification and filter change. True or
false? - ANSWER-True.
NAFA Guide to Air Filtration, 5th ed. 2014, page 10.10
QUESTION: ANSI/ASHRAE Standard 62.1-2013 Section 5.9 states that schools shall have a filter
efficiency of at least MERV __. - ANSWER-8
1
,Page 2 of 49
NAFA Guide to Air Filtration, 5th ed. 2014, page 12.8
QUESTION: What is the primary reason for a prefilter? - ANSWER-Life extension of the final
filter.
NAFA Guide to Air Filtration, 5th ed. 2014, page 13.5
QUESTION: When estimating the annual cost of owning and operating a filter system, you
should factor in what? - ANSWER-Annual depreciation of equipment.
Annual operating costs, including:
- Initial investment
- Inventory costs
- Shipping costs
- Damage/Storage loss costs
- Installation and removal costs
- Disposal costs
- Energy costs
2
,Page 3 of 49
NAFA Guide to Air Filtration, 5th ed. 2014, page 13.7
QUESTION: Short-wave ultraviolet radiation in the "C" band, has a germicidal effect on
microorganisms. What span of wavelengths does this utilize?
a.) 1-10
b.) 1800-1930
c.) 200-280
d.) 100-200 - ANSWER-c.) 200-280 nanometers
NAFA Guide to Air Filtration, 5th ed. 2014, page 14.1
QUESTION: Metal working fluids (MWF) are used to:
a.) Reduce the temperature of the cutting tools
b.) Reduce the temperature of the production part
c.) Clean the production part
d.) All of the above - ANSWER-d.) All of the above.
3
, Page 4 of 49
MWF are used to cool, lubricate, and clean the produced part and the tools.
NAFA Guide to Air Filtration, 5th ed. 2014, page 15.1
QUESTION: Properly designed source-capture mist collection systems must have continuous
airflow. True or false? - ANSWER-True.
NAFA Guide to Air Filtration, 5th ed. 2014, page 15.4
QUESTION: Oil mist and smoke separators can be divided into what 3 parts? - ANSWER-1.)
Media-type filtration systems
2.)Centrifugal separators and cyclone separators
3.)Electrostatic precipitators
NAFA Guide to Air Filtration, 5th ed. 2014, page 15.5
QUESTION: Shaker baghouses are named "Shaker" because:
a.) They were developed by Father James Whittaker, a leader in the Shaker religion, in 1789, for
use in his woodshop.
4
NAFA Certified Air Filter Specialist (CAFS) EXAM
TESTBANK ALL 250 QUESTIONS AND DETAILED
SOLUTIONS LATEST UPDATE THIS YEAR
QUESTION: A TB isolation room must be kept under a ____________ pressure.
a.) Positive
b.) Negative
c.) Laminar
d.) Static - ANSWER-b.) Negative
NAFA Guide to Air Filtration, 5th ed. 2014, page 10.8
QUESTION: All biological safety cabinets require periodic certification and filter change. True or
false? - ANSWER-True.
NAFA Guide to Air Filtration, 5th ed. 2014, page 10.10
QUESTION: ANSI/ASHRAE Standard 62.1-2013 Section 5.9 states that schools shall have a filter
efficiency of at least MERV __. - ANSWER-8
1
,Page 2 of 49
NAFA Guide to Air Filtration, 5th ed. 2014, page 12.8
QUESTION: What is the primary reason for a prefilter? - ANSWER-Life extension of the final
filter.
NAFA Guide to Air Filtration, 5th ed. 2014, page 13.5
QUESTION: When estimating the annual cost of owning and operating a filter system, you
should factor in what? - ANSWER-Annual depreciation of equipment.
Annual operating costs, including:
- Initial investment
- Inventory costs
- Shipping costs
- Damage/Storage loss costs
- Installation and removal costs
- Disposal costs
- Energy costs
2
,Page 3 of 49
NAFA Guide to Air Filtration, 5th ed. 2014, page 13.7
QUESTION: Short-wave ultraviolet radiation in the "C" band, has a germicidal effect on
microorganisms. What span of wavelengths does this utilize?
a.) 1-10
b.) 1800-1930
c.) 200-280
d.) 100-200 - ANSWER-c.) 200-280 nanometers
NAFA Guide to Air Filtration, 5th ed. 2014, page 14.1
QUESTION: Metal working fluids (MWF) are used to:
a.) Reduce the temperature of the cutting tools
b.) Reduce the temperature of the production part
c.) Clean the production part
d.) All of the above - ANSWER-d.) All of the above.
3
, Page 4 of 49
MWF are used to cool, lubricate, and clean the produced part and the tools.
NAFA Guide to Air Filtration, 5th ed. 2014, page 15.1
QUESTION: Properly designed source-capture mist collection systems must have continuous
airflow. True or false? - ANSWER-True.
NAFA Guide to Air Filtration, 5th ed. 2014, page 15.4
QUESTION: Oil mist and smoke separators can be divided into what 3 parts? - ANSWER-1.)
Media-type filtration systems
2.)Centrifugal separators and cyclone separators
3.)Electrostatic precipitators
NAFA Guide to Air Filtration, 5th ed. 2014, page 15.5
QUESTION: Shaker baghouses are named "Shaker" because:
a.) They were developed by Father James Whittaker, a leader in the Shaker religion, in 1789, for
use in his woodshop.
4
