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Ohio Sheet Metal Fabricator Certification Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf
- What is the primary purpose of sheet metal layout in fabrication?
a) To reduce the cost of material
b) To create accurate patterns before cutting
c) To speed up welding
d) To measure finished parts
Answer: b) To create accurate patterns before cutting
Rationale: Accurate layout ensures that parts fit and assemble
correctly before fabrication begins.
- Which of the following metals is most commonly used for ductwork?
a) Copper
b) Titanium
c) Galvanized steel
d) Bronze 1 / 3
Rationale: Galvanized steel is corrosion-resistant and economical for
HVAC duct systems.
- What is the purpose of a Pittsburgh seam in sheet metal work?
a) To finish edges
b) To reduce noise
c) To join two sections of sheet metal
d) To cut straight lines
Answer: c) To join two sections of sheet metal
Rationale: The Pittsburgh seam forms a lock joint commonly used in
duct fabrication.
- Which tool is used to cut sheet metal by hand?
a) Bandsaw
b) Shear press
c) Tin snips
d) Angle grinder
Rationale: Tin snips are manual cutters designed for sheet metal.
5. A brake is used in sheet metal to:
a) Weld joints
b) Make precise bends
c) Cut circular shapes
d) Smooth surfaces
Rationale: A brake bends sheet metal to exact angles. 2 / 3
- What gauge number represents thicker sheet metal?
- 30 gauge
- 10 gauge
- 32 gauge
- 26 gauge
Rationale: Lower gauge numbers indicate thicker metal.
- Which of the following is a non-ferrous metal?
a) Aluminum
b) Carbon steel
c) Stainless steel
d) Tool steel
Rationale: Aluminum contains no iron and is classified as non-
ferrous.
- What is the purpose of annealing sheet metal?
a) To harden it
b) To coat it
c) To soften it
d) To clean it
Rationale: Annealing reduces hardness, making metal easier to
shape.
- Which welding process is commonly used for thin sheet metal?
a) Stick welding
b) Submerged arc welding
- / 3
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