NYC Health + Hospitals Supervising
Sheet Metal Worker Examination
Practice Exam 2026 | 100 Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. What is the primary purpose of a sheet metal supervisor on a construction
or maintenance project?
A. Perform only material deliveries
B. Coordinate workers, materials, methods, safety, and quality
C. Prepare payroll only
D. Operate every piece of equipment personally
Answer: B. Coordinate workers, materials, methods, safety, and quality
Rationale: A supervising sheet metal worker is responsible for coordinating the
work crew, ensuring proper installation methods, maintaining quality,
managing materials, and enforcing safe work practices.
2. Before beginning sheet metal work in an occupied healthcare facility, what
should be reviewed first?
A. Employee vacation schedules
B. Work plans, drawings, specifications, hazards, and facility requirements
C. Personal tool preferences
D. Lunch schedules
,Answer: B. Work plans, drawings, specifications, hazards, and facility
requirements
Rationale: Healthcare facilities require careful planning because construction
activities can affect patients, staff, infection control, utilities, and building
operations.
3. Which tool is commonly used to make accurate layout lines on sheet
metal?
A. Pipe wrench
B. Combination square
C. Pry bar
D. Chain hoist
Answer: B. Combination square
Rationale: A combination square is useful for establishing accurate 90-degree
and 45-degree measurements and layout lines.
4. What is the purpose of a duct turning vane?
A. Increase duct weight
B. Improve airflow through elbows by reducing turbulence and pressure loss
C. Seal duct joints
D. Support electrical conduit
Answer: B. Improve airflow through elbows by reducing turbulence and
pressure loss
Rationale: Turning vanes guide air through duct elbows and can reduce
turbulence and pressure drop.
5. What is the primary function of a duct system in an HVAC installation?
A. Carry electrical current
B. Carry plumbing water
,C. Transport conditioned or ventilated air
D. Store refrigerant
Answer: C. Transport conditioned or ventilated air
Rationale: HVAC ductwork distributes supply, return, exhaust, and ventilation
air throughout a building.
6. What should a supervisor do if field conditions differ significantly from the
drawings?
A. Ignore the difference
B. Tell workers to improvise without documentation
C. Verify the condition and coordinate with the appropriate project authority
before proceeding
D. Remove the existing installation immediately
Answer: C. Verify the condition and coordinate with the appropriate project
authority before proceeding
Rationale: Unverified field changes can create safety, quality, code, and
coordination problems.
7. What is the purpose of a duct flange?
A. Reduce worker fatigue
B. Provide a connection and reinforcement point between duct sections
C. Measure airflow
D. Cut insulation
Answer: B. Provide a connection and reinforcement point between duct
sections
Rationale: Flanged connections join duct sections and can also provide structural
reinforcement.
8. Which condition is most likely to cause excessive leakage from a duct
system?
, A. Properly sealed joints
B. Correctly installed gaskets
C. Unsealed seams and poorly connected joints
D. Properly tightened fasteners
Answer: C. Unsealed seams and poorly connected joints
Rationale: Air escapes through gaps, unsealed seams, improperly fitted joints,
and damaged duct sections.
9. What is the purpose of duct insulation?
A. Increase noise
B. Reduce heat transfer and control condensation
C. Increase electrical resistance
D. Replace duct supports
Answer: B. Reduce heat transfer and control condensation
Rationale: Insulation limits unwanted heat gain or loss and helps prevent
condensation on cold surfaces.
10.What should be done before cutting into an existing duct system in a
hospital?
A. Cut immediately
B. Verify the work authorization, affected systems, hazards, and required
shutdown or isolation procedures
C. Remove all nearby ceiling tiles
D. Turn off only the lights
Answer: B. Verify the work authorization, affected systems, hazards, and
required shutdown or isolation procedures
Rationale: Cutting existing ductwork can affect ventilation, infection control, fire
protection, and building operations.
Sheet Metal Worker Examination
Practice Exam 2026 | 100 Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. What is the primary purpose of a sheet metal supervisor on a construction
or maintenance project?
A. Perform only material deliveries
B. Coordinate workers, materials, methods, safety, and quality
C. Prepare payroll only
D. Operate every piece of equipment personally
Answer: B. Coordinate workers, materials, methods, safety, and quality
Rationale: A supervising sheet metal worker is responsible for coordinating the
work crew, ensuring proper installation methods, maintaining quality,
managing materials, and enforcing safe work practices.
2. Before beginning sheet metal work in an occupied healthcare facility, what
should be reviewed first?
A. Employee vacation schedules
B. Work plans, drawings, specifications, hazards, and facility requirements
C. Personal tool preferences
D. Lunch schedules
,Answer: B. Work plans, drawings, specifications, hazards, and facility
requirements
Rationale: Healthcare facilities require careful planning because construction
activities can affect patients, staff, infection control, utilities, and building
operations.
3. Which tool is commonly used to make accurate layout lines on sheet
metal?
A. Pipe wrench
B. Combination square
C. Pry bar
D. Chain hoist
Answer: B. Combination square
Rationale: A combination square is useful for establishing accurate 90-degree
and 45-degree measurements and layout lines.
4. What is the purpose of a duct turning vane?
A. Increase duct weight
B. Improve airflow through elbows by reducing turbulence and pressure loss
C. Seal duct joints
D. Support electrical conduit
Answer: B. Improve airflow through elbows by reducing turbulence and
pressure loss
Rationale: Turning vanes guide air through duct elbows and can reduce
turbulence and pressure drop.
5. What is the primary function of a duct system in an HVAC installation?
A. Carry electrical current
B. Carry plumbing water
,C. Transport conditioned or ventilated air
D. Store refrigerant
Answer: C. Transport conditioned or ventilated air
Rationale: HVAC ductwork distributes supply, return, exhaust, and ventilation
air throughout a building.
6. What should a supervisor do if field conditions differ significantly from the
drawings?
A. Ignore the difference
B. Tell workers to improvise without documentation
C. Verify the condition and coordinate with the appropriate project authority
before proceeding
D. Remove the existing installation immediately
Answer: C. Verify the condition and coordinate with the appropriate project
authority before proceeding
Rationale: Unverified field changes can create safety, quality, code, and
coordination problems.
7. What is the purpose of a duct flange?
A. Reduce worker fatigue
B. Provide a connection and reinforcement point between duct sections
C. Measure airflow
D. Cut insulation
Answer: B. Provide a connection and reinforcement point between duct
sections
Rationale: Flanged connections join duct sections and can also provide structural
reinforcement.
8. Which condition is most likely to cause excessive leakage from a duct
system?
, A. Properly sealed joints
B. Correctly installed gaskets
C. Unsealed seams and poorly connected joints
D. Properly tightened fasteners
Answer: C. Unsealed seams and poorly connected joints
Rationale: Air escapes through gaps, unsealed seams, improperly fitted joints,
and damaged duct sections.
9. What is the purpose of duct insulation?
A. Increase noise
B. Reduce heat transfer and control condensation
C. Increase electrical resistance
D. Replace duct supports
Answer: B. Reduce heat transfer and control condensation
Rationale: Insulation limits unwanted heat gain or loss and helps prevent
condensation on cold surfaces.
10.What should be done before cutting into an existing duct system in a
hospital?
A. Cut immediately
B. Verify the work authorization, affected systems, hazards, and required
shutdown or isolation procedures
C. Remove all nearby ceiling tiles
D. Turn off only the lights
Answer: B. Verify the work authorization, affected systems, hazards, and
required shutdown or isolation procedures
Rationale: Cutting existing ductwork can affect ventilation, infection control, fire
protection, and building operations.
