NYC Health + Hospitals Sheet Metal
Worker Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which tool is primarily used to cut and shape sheet metal accurately
along marked lines?
A. Pipe wrench
B. Aviation snips
C. Torque wrench
D. Ball-peen hammer
Rationale: Aviation snips are specifically designed to cut sheet metal
cleanly and accurately. Different snip styles are used depending on the
direction and type of cut required.
2. What is the primary purpose of a Pittsburgh lock seam in sheet metal
work?
A. To reinforce structural steel beams
B. To attach insulation to ducts
C. To join two pieces of sheet metal into a secure seam
D. To connect copper tubing
,Rationale: The Pittsburgh lock seam is one of the most common methods
for joining rectangular duct sections, providing a durable and airtight
connection.
3. Which measuring tool provides the greatest accuracy when measuring
sheet metal thickness?
A. Tape measure
B. Steel rule
C. Micrometer
D. Carpenter's square
Rationale: A micrometer measures thickness with a high degree of
precision, making it ideal for determining sheet metal gauge.
4. When laying out a square duct fitting, what is the first step?
A. Apply sealant
B. Read and interpret the drawing or blueprint
C. Install reinforcement angles
D. Attach hangers
Rationale: Accurate fabrication begins with correctly interpreting the
drawing to determine dimensions, allowances, and fabrication
requirements.
5. Which gauge number represents thicker sheet metal?
A. 26 gauge
B. 24 gauge
C. 22 gauge
D. 16 gauge
Rationale: In sheet metal work, lower gauge numbers indicate thicker
material. Sixteen-gauge steel is significantly thicker than 26-gauge steel.
6. Before operating a powered shear, a worker should first:
, A. Remove all machine guards.
B. Increase blade speed.
C. Inspect the equipment for safe operating condition.
D. Lubricate the sheet metal.
Rationale: Equipment should always be inspected before use to ensure
guards are in place and the machine is functioning safely.
7. What is the primary function of turning vanes inside ductwork?
A. Reduce duct weight.
B. Increase air temperature.
C. Improve airflow through elbows.
D. Prevent duct corrosion.
Rationale: Turning vanes guide airflow smoothly through elbows, reducing
turbulence and pressure loss.
8. Which PPE is essential when handling sharp sheet metal?
A. Sandals
B. Cut-resistant gloves
C. Cotton gloves only
D. Hearing aids
Rationale: Cut-resistant gloves help protect workers from lacerations
caused by sharp metal edges.
9. What does a brake machine primarily do?
A. Weld steel.
B. Bend sheet metal.
C. Cut threaded rod.
D. Drill anchor holes.
Rationale: A sheet metal brake is used to produce accurate bends and folds
in sheet metal.
Worker Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which tool is primarily used to cut and shape sheet metal accurately
along marked lines?
A. Pipe wrench
B. Aviation snips
C. Torque wrench
D. Ball-peen hammer
Rationale: Aviation snips are specifically designed to cut sheet metal
cleanly and accurately. Different snip styles are used depending on the
direction and type of cut required.
2. What is the primary purpose of a Pittsburgh lock seam in sheet metal
work?
A. To reinforce structural steel beams
B. To attach insulation to ducts
C. To join two pieces of sheet metal into a secure seam
D. To connect copper tubing
,Rationale: The Pittsburgh lock seam is one of the most common methods
for joining rectangular duct sections, providing a durable and airtight
connection.
3. Which measuring tool provides the greatest accuracy when measuring
sheet metal thickness?
A. Tape measure
B. Steel rule
C. Micrometer
D. Carpenter's square
Rationale: A micrometer measures thickness with a high degree of
precision, making it ideal for determining sheet metal gauge.
4. When laying out a square duct fitting, what is the first step?
A. Apply sealant
B. Read and interpret the drawing or blueprint
C. Install reinforcement angles
D. Attach hangers
Rationale: Accurate fabrication begins with correctly interpreting the
drawing to determine dimensions, allowances, and fabrication
requirements.
5. Which gauge number represents thicker sheet metal?
A. 26 gauge
B. 24 gauge
C. 22 gauge
D. 16 gauge
Rationale: In sheet metal work, lower gauge numbers indicate thicker
material. Sixteen-gauge steel is significantly thicker than 26-gauge steel.
6. Before operating a powered shear, a worker should first:
, A. Remove all machine guards.
B. Increase blade speed.
C. Inspect the equipment for safe operating condition.
D. Lubricate the sheet metal.
Rationale: Equipment should always be inspected before use to ensure
guards are in place and the machine is functioning safely.
7. What is the primary function of turning vanes inside ductwork?
A. Reduce duct weight.
B. Increase air temperature.
C. Improve airflow through elbows.
D. Prevent duct corrosion.
Rationale: Turning vanes guide airflow smoothly through elbows, reducing
turbulence and pressure loss.
8. Which PPE is essential when handling sharp sheet metal?
A. Sandals
B. Cut-resistant gloves
C. Cotton gloves only
D. Hearing aids
Rationale: Cut-resistant gloves help protect workers from lacerations
caused by sharp metal edges.
9. What does a brake machine primarily do?
A. Weld steel.
B. Bend sheet metal.
C. Cut threaded rod.
D. Drill anchor holes.
Rationale: A sheet metal brake is used to produce accurate bends and folds
in sheet metal.
