NADCA(question with complete solution)2023 updated
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Course
Ascs
Institution
Ascs
NADCA(question with complete solution)2023 updatedBioaerosols - correct answer Airborne particles of biological origin
Debris - correct answer Non-adhered substances not intended to be present that is located within the HVAC system
Abrasion - correct answer A surface loss of material due t...
NADCA(question with complete solution)2023 updated
Bioaerosols - correct answer Airborne particles of biological origin
Debris - correct answer Non-adhered substances not intended to be present that is located within the HVAC system
Abrasion - correct answer A surface loss of material due to friction
Access - correct answer The ability to gain entry to the interior of the air duct or HVAC component
Access Door - correct answer Fabricated metal barrier (hatch) by which a service opening is accessed or closed
Adhered Substance - correct answer A material, such as mastic, that is not removable by direct contact vacuuming
ACGIH - correct answer American Conference of Governmental Industrial Hygienists
Adhered Particulate - correct answer Any material not intended or designed to be present in an HVAC system, and which must be dislodged in order to be removed
Aerosols - correct answer Solid or liquid airborne particles
AIHA - correct answer American Industrial Hygiene Association Air Duct - correct answer A passageway for distribution and extraction of air, excluding plenums not installed in accordance with SMACNA Standards (See ASHE Terminology of Heating, Ventilation, Air Conditioning & Refrigeration 1991)
Air Duct Covering - correct answer Materials such as insulation and banding used to cover the external surface as a duct
Air Duct Lining - correct answer Generally refers to fiber glass or other matting affixed to the interior surfaces of the air ducts for the thermal insulation and noise attenuation
Air Filtration Device (AFD) - correct answer A portable or transportable, self-contained blower assembly designed to move a defined volume of air equipped with one or more stages of particulate filtration.
Air Sweeping - correct answer A process that uses a pressurized air source combined with either handheld blowguns or a hose with a remote nozzle attachment to move particulate and debris within an HVAC system during cleaning
Air Systems Cleaning Specialist (ASCS) - correct answer Designation is awarded by NADCA to industry professionals who satisfactorily complete a written certification examination testing knowledge of HVAC systems, cleaning standards and best practices
Air-Handling Unit (AHU) - correct answer A packaged assembly, usually connected to ductwork, that moves air and may also clean and condition air.
Central-Station Air Handling Unit - correct answer Factory made encased assembly consisting of the fan or fans and other necessary equipment, that perform one or more functions of circulating, cleaning, heating, cooling, humidifying, dehumidifying, and mixing of air; does not include a heating or cooling source.
Cooling-Heating Unit - correct answer Unit that includes means for cooling and heating, and which may also included means for other air-handling unit functions
Cooling Unit - correct answer Unit that includes means for cooling and which may also include means for other air-handling unit functions
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