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. A sheet metal worker is assigned to fabricate a rectangular HVAC duct
section. Which measurement is most critical before cutting the sheet
metal to ensure proper assembly and fit?
A. The color of the metal surface
B. The gauge number only
C. Accurate length, width, and height dimensions from the plan
D. The weight of the duct section
Correct Answer: C
Accurate dimensions are essential because duct sections must match
design specifications and connect properly with other components during
installation.
2. When determining the thickness of sheet metal, the gauge system
indicates that a higher gauge number generally represents:
A. Thicker metal
B. Thinner metal
,C. Heavier insulation
D. Greater duct pressure rating
Correct Answer: B
In sheet metal work, gauge numbers are inversely related to thickness,
meaning higher gauge numbers indicate thinner metal.
3. Which tool is commonly used by sheet metal workers to make straight
cuts in sheet metal?
A. Pipe wrench
B. Aviation snips
C. Torque wrench
D. Pipe cutter
Correct Answer: B
Aviation snips are designed for cutting sheet metal and are available in
different types for straight, left, and right cuts.
4. The primary purpose of a duct flange is to:
A. Increase the temperature of air
B. Provide a connection point between duct sections
C. Reduce the weight of ductwork
D. Prevent all air movement
Correct Answer: B
Duct flanges allow sections of ductwork to be joined securely while
maintaining structural integrity and proper airflow.
5. Before operating a power shear or other sheet metal cutting
equipment, a worker should first:
A. Remove all guards
B. Wear appropriate personal protective equipment
,C. Increase the machine speed immediately
D. Lubricate the floor area
Correct Answer: B
Personal protective equipment such as gloves, eye protection, and hearing
protection helps reduce the risk of injury during machine operation.
6. Which material is commonly used for HVAC duct fabrication because it
is durable, corrosion-resistant, and easy to form?
A. Galvanized steel
B. Cast iron
C. Concrete
D. Wood
Correct Answer: A
Galvanized steel is widely used in HVAC systems because its zinc coating
improves corrosion resistance and provides durability.
7. When reading a sheet metal fabrication drawing, a scale is used to:
A. Measure temperature
B. Determine actual dimensions from the drawing
C. Identify metal hardness
D. Test air pressure
Correct Answer: B
Blueprint scales allow workers to convert drawing measurements into
accurate real-world dimensions.
8. The main function of an HVAC duct system is to:
A. Store refrigerant
B. Transport conditioned air throughout a building
, C. Generate electricity
D. Remove structural supports
Correct Answer: B
Duct systems distribute heated, cooled, or ventilated air throughout
buildings to maintain indoor comfort and air quality.
9. Which tool is used to check whether a surface or duct section is
perfectly horizontal or vertical?
A. Level
B. Compass
C. Punch
D. Divider
Correct Answer: A
A level determines whether an installation is properly aligned horizontally
or vertically.
10. A Pittsburgh lock seam is commonly used in sheet metal work
because it:
A. Creates a strong mechanical joint
B. Eliminates the need for measurements
C. Prevents cutting operations
D. Changes metal thickness
Correct Answer: A
The Pittsburgh seam provides strength and durability and is commonly
used in duct fabrication.
11. When working around sharp sheet metal edges, the most
appropriate protective equipment is:
Worker Exam Practice Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. A sheet metal worker is assigned to fabricate a rectangular HVAC duct
section. Which measurement is most critical before cutting the sheet
metal to ensure proper assembly and fit?
A. The color of the metal surface
B. The gauge number only
C. Accurate length, width, and height dimensions from the plan
D. The weight of the duct section
Correct Answer: C
Accurate dimensions are essential because duct sections must match
design specifications and connect properly with other components during
installation.
2. When determining the thickness of sheet metal, the gauge system
indicates that a higher gauge number generally represents:
A. Thicker metal
B. Thinner metal
,C. Heavier insulation
D. Greater duct pressure rating
Correct Answer: B
In sheet metal work, gauge numbers are inversely related to thickness,
meaning higher gauge numbers indicate thinner metal.
3. Which tool is commonly used by sheet metal workers to make straight
cuts in sheet metal?
A. Pipe wrench
B. Aviation snips
C. Torque wrench
D. Pipe cutter
Correct Answer: B
Aviation snips are designed for cutting sheet metal and are available in
different types for straight, left, and right cuts.
4. The primary purpose of a duct flange is to:
A. Increase the temperature of air
B. Provide a connection point between duct sections
C. Reduce the weight of ductwork
D. Prevent all air movement
Correct Answer: B
Duct flanges allow sections of ductwork to be joined securely while
maintaining structural integrity and proper airflow.
5. Before operating a power shear or other sheet metal cutting
equipment, a worker should first:
A. Remove all guards
B. Wear appropriate personal protective equipment
,C. Increase the machine speed immediately
D. Lubricate the floor area
Correct Answer: B
Personal protective equipment such as gloves, eye protection, and hearing
protection helps reduce the risk of injury during machine operation.
6. Which material is commonly used for HVAC duct fabrication because it
is durable, corrosion-resistant, and easy to form?
A. Galvanized steel
B. Cast iron
C. Concrete
D. Wood
Correct Answer: A
Galvanized steel is widely used in HVAC systems because its zinc coating
improves corrosion resistance and provides durability.
7. When reading a sheet metal fabrication drawing, a scale is used to:
A. Measure temperature
B. Determine actual dimensions from the drawing
C. Identify metal hardness
D. Test air pressure
Correct Answer: B
Blueprint scales allow workers to convert drawing measurements into
accurate real-world dimensions.
8. The main function of an HVAC duct system is to:
A. Store refrigerant
B. Transport conditioned air throughout a building
, C. Generate electricity
D. Remove structural supports
Correct Answer: B
Duct systems distribute heated, cooled, or ventilated air throughout
buildings to maintain indoor comfort and air quality.
9. Which tool is used to check whether a surface or duct section is
perfectly horizontal or vertical?
A. Level
B. Compass
C. Punch
D. Divider
Correct Answer: A
A level determines whether an installation is properly aligned horizontally
or vertically.
10. A Pittsburgh lock seam is commonly used in sheet metal work
because it:
A. Creates a strong mechanical joint
B. Eliminates the need for measurements
C. Prevents cutting operations
D. Changes metal thickness
Correct Answer: A
The Pittsburgh seam provides strength and durability and is commonly
used in duct fabrication.
11. When working around sharp sheet metal edges, the most
appropriate protective equipment is:
