Manitoba Sheet Metal Worker Certification
Practice Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1. What is the primary purpose of sheet metal layout?
A. To estimate material costs
B. To plan accurate cutting and forming
C. To select fasteners
D. To determine insulation requirements
Answer: B
Layout ensures components are cut and formed accurately
according to design specifications.
2. Which tool is most commonly used to mark straight layout lines
on sheet metal?
A. Divider
B. Scratch awl
C. Centre punch
D. Chalk line
Answer: B
A scratch awl produces fine, precise lines that remain visible
during fabrication.
3. What gauge number represents thicker sheet metal?
A. 26 gauge
B. 24 gauge
, C. 22 gauge
D. 20 gauge
Answer: D
Lower gauge numbers indicate thicker sheet metal.
4. Which metal is most commonly used in HVAC ductwork?
A. Aluminum
B. Stainless steel
C. Galvanized steel
D. Copper
Answer: C
Galvanized steel is durable, corrosion-resistant, and cost-effective
for duct systems.
5. What is the function of a Pittsburgh seam?
A. Decorative joint
B. Temporary connection
C. Longitudinal duct joint
D. Structural reinforcement
Answer: C
The Pittsburgh seam is widely used to join rectangular duct
sections.
6. Which hand tool is used to form small bends and flanges?
A. Slip roll
B. Bar folder
C. Hand seamer
D. Brake press
Answer: C
Hand seamers are ideal for short bends and adjustments.
, 7. What is the main hazard when working with sheet metal edges?
A. Burns
B. Electric shock
C. Cuts and lacerations
D. Eye strain
Answer: C
Sharp edges pose a significant risk of cuts without proper PPE.
8. Which fastener is most commonly used for light-gauge ductwork?
A. Rivets
B. Bolts and nuts
C. Welds
D. Sheet metal screws
Answer: D
Sheet metal screws provide quick and secure fastening for light-
gauge materials.
9. What is the purpose of insulation in HVAC duct systems?
A. Improve airflow speed
B. Reduce noise and heat loss
C. Increase structural strength
D. Prevent corrosion
Answer: B
Insulation minimizes heat transfer and sound transmission.
10. Which symbol on drawings indicates a bend line?
A. Solid thick line
B. Dashed line
C. Centre line
D. Dimension line
Practice Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of sheet metal layout?
A. To estimate material costs
B. To plan accurate cutting and forming
C. To select fasteners
D. To determine insulation requirements
Answer: B
Layout ensures components are cut and formed accurately
according to design specifications.
2. Which tool is most commonly used to mark straight layout lines
on sheet metal?
A. Divider
B. Scratch awl
C. Centre punch
D. Chalk line
Answer: B
A scratch awl produces fine, precise lines that remain visible
during fabrication.
3. What gauge number represents thicker sheet metal?
A. 26 gauge
B. 24 gauge
, C. 22 gauge
D. 20 gauge
Answer: D
Lower gauge numbers indicate thicker sheet metal.
4. Which metal is most commonly used in HVAC ductwork?
A. Aluminum
B. Stainless steel
C. Galvanized steel
D. Copper
Answer: C
Galvanized steel is durable, corrosion-resistant, and cost-effective
for duct systems.
5. What is the function of a Pittsburgh seam?
A. Decorative joint
B. Temporary connection
C. Longitudinal duct joint
D. Structural reinforcement
Answer: C
The Pittsburgh seam is widely used to join rectangular duct
sections.
6. Which hand tool is used to form small bends and flanges?
A. Slip roll
B. Bar folder
C. Hand seamer
D. Brake press
Answer: C
Hand seamers are ideal for short bends and adjustments.
, 7. What is the main hazard when working with sheet metal edges?
A. Burns
B. Electric shock
C. Cuts and lacerations
D. Eye strain
Answer: C
Sharp edges pose a significant risk of cuts without proper PPE.
8. Which fastener is most commonly used for light-gauge ductwork?
A. Rivets
B. Bolts and nuts
C. Welds
D. Sheet metal screws
Answer: D
Sheet metal screws provide quick and secure fastening for light-
gauge materials.
9. What is the purpose of insulation in HVAC duct systems?
A. Improve airflow speed
B. Reduce noise and heat loss
C. Increase structural strength
D. Prevent corrosion
Answer: B
Insulation minimizes heat transfer and sound transmission.
10. Which symbol on drawings indicates a bend line?
A. Solid thick line
B. Dashed line
C. Centre line
D. Dimension line
