Alberta Sheet Metal Worker Red Seal Exam
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a duct system in a building?
A. To support the building structure
B. To distribute air for heating, cooling, and ventilation
C. To carry water and waste
D. To provide electrical wiring pathways
Duct systems move conditioned air efficiently throughout a
building to maintain indoor air quality and comfort.
2. Which type of metal is most commonly used for residential
ductwork?
A. Copper
B. Galvanized steel
C. Aluminum
D. Stainless steel
Galvanized steel is cost-effective, durable, and resistant to
corrosion, making it ideal for ductwork.
3. What is the standard thickness for residential galvanized steel
ductwork?
A. 10 gauge
B. 26 gauge
C. 28 gauge
, D. 30 gauge
28 gauge is commonly used in residential applications for ease of
fabrication and sufficient strength.
4. Which tool is used to measure angles for cutting sheet metal?
A. Hammer
B. Screwdriver
C. Protractor
D. Caliper
Protractors allow precise angle measurements for accurate sheet
metal cuts.
5. When joining two sections of duct, what is the most common
method?
A. Welding
B. Gluing
C. Lockseam or slip joint with mechanical fasteners
D. Soldering
Mechanical joints like lockseams ensure airtight connections and
structural stability.
6. What type of seam is typically used on round ductwork?
A. Butt seam
B. Lock seam
C. Double lap seam
D. None of the above
Lock seams allow duct sections to interlock securely, maintaining
airflow and strength.
7. What is the primary hazard when cutting sheet metal?
A. Fire
, B. Sharp edges causing lacerations
C. Electric shock
D. UV exposure
Sharp edges on sheet metal can easily cut skin; proper gloves are
essential.
8. What is the purpose of a plenum in an HVAC system?
A. To cool the air
B. To act as a central air distribution chamber
C. To filter water
D. To support duct hangers
Plenums collect and distribute air from the HVAC unit to the duct
system efficiently.
9. Which ventilation system component removes dust and
particulates from the air?
A. Damper
B. Fan
C. Filter
D. Plenum
Filters trap airborne particles to protect equipment and maintain
air quality.
10. What is the purpose of a backdraft damper?
A. To increase air velocity
B. To prevent reverse airflow
C. To humidify air
D. To filter contaminants
Backdraft dampers prevent air from flowing backward into
ductwork or equipment.
Questions And Correct Answers (Verified
Answers) Plus Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of a duct system in a building?
A. To support the building structure
B. To distribute air for heating, cooling, and ventilation
C. To carry water and waste
D. To provide electrical wiring pathways
Duct systems move conditioned air efficiently throughout a
building to maintain indoor air quality and comfort.
2. Which type of metal is most commonly used for residential
ductwork?
A. Copper
B. Galvanized steel
C. Aluminum
D. Stainless steel
Galvanized steel is cost-effective, durable, and resistant to
corrosion, making it ideal for ductwork.
3. What is the standard thickness for residential galvanized steel
ductwork?
A. 10 gauge
B. 26 gauge
C. 28 gauge
, D. 30 gauge
28 gauge is commonly used in residential applications for ease of
fabrication and sufficient strength.
4. Which tool is used to measure angles for cutting sheet metal?
A. Hammer
B. Screwdriver
C. Protractor
D. Caliper
Protractors allow precise angle measurements for accurate sheet
metal cuts.
5. When joining two sections of duct, what is the most common
method?
A. Welding
B. Gluing
C. Lockseam or slip joint with mechanical fasteners
D. Soldering
Mechanical joints like lockseams ensure airtight connections and
structural stability.
6. What type of seam is typically used on round ductwork?
A. Butt seam
B. Lock seam
C. Double lap seam
D. None of the above
Lock seams allow duct sections to interlock securely, maintaining
airflow and strength.
7. What is the primary hazard when cutting sheet metal?
A. Fire
, B. Sharp edges causing lacerations
C. Electric shock
D. UV exposure
Sharp edges on sheet metal can easily cut skin; proper gloves are
essential.
8. What is the purpose of a plenum in an HVAC system?
A. To cool the air
B. To act as a central air distribution chamber
C. To filter water
D. To support duct hangers
Plenums collect and distribute air from the HVAC unit to the duct
system efficiently.
9. Which ventilation system component removes dust and
particulates from the air?
A. Damper
B. Fan
C. Filter
D. Plenum
Filters trap airborne particles to protect equipment and maintain
air quality.
10. What is the purpose of a backdraft damper?
A. To increase air velocity
B. To prevent reverse airflow
C. To humidify air
D. To filter contaminants
Backdraft dampers prevent air from flowing backward into
ductwork or equipment.
