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100+ Free NV C-1E Sheet Metal Practice Questions

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2026 Statistics

Key Facts: NV C-1E Sheet Metal Exam

60 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

70%

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

2.5 hours

Time Allowed

PSI Nevada Contractor CIB updated 3/25/2026

USD 95

PSI Exam Fee (one portion)

PSI Nevada Contractor CIB updated 3/25/2026

Open Book

Book Policy

PSI Nevada Contractor CIB updated 3/25/2026

Nevada C-1E Sheet Metal Contractor Examination is the official NSCB/PSI open book exam: 60 questions, 70% (42 of 60 points), 2.5 hours, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English.

Sample NV C-1E Sheet Metal Practice Questions

Try these sample questions to test your NV C-1E Sheet Metal exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under NAC 624.190, which installation is outside the Nevada C-1E sheet metal subclassification?
A.Installing a patented metal chimney and flue
B.Fabricating a stainless-steel commercial steam-table pan
C.Fabricating and installing a galvanized supply duct
D.Installing a packaged rooftop unit that uses refrigeration as an integral part of the system
Explanation: NAC 624.190(2)(e) authorizes C-1E work on cornices, flashings, gutters, leaders, downspouts, pans, food-service equipment, ducts, louvres, patented chimneys, flues, and metal roof systems. The same paragraph does not authorize installing equipment that uses refrigeration as an integral part of the system. That refrigeration work belongs to another classification.
2What is the correct relationship among airflow (CFM), average velocity (FPM), and internal cross-sectional area (square feet) in a sheet-metal duct?
A.Velocity equals airflow divided by area (FPM = CFM / sq ft)
B.Velocity equals airflow multiplied by area
C.Velocity equals area divided by airflow
D.Velocity equals airflow plus area
Explanation: Continuity requires Q = A × V. Rearranged, average velocity in feet per minute equals cubic feet per minute divided by the internal area in square feet. Rectangular area is (width in inches × height in inches) / 144. Candidates use this identity on every CFM and velocity item on the open-book C-1E exam.
3A rectangular galvanized duct measures 24 inches wide by 12 inches high and carries 2,400 CFM. What is the average air velocity?
A.800 feet per minute
B.1,000 feet per minute
C.1,200 feet per minute
D.1,600 feet per minute
Explanation: Internal area is (24 × 12) / 144 = 2.00 square feet. Velocity is 2,400 CFM ÷ 2.00 sq ft = 1,200 FPM. That value is typical of a low-velocity commercial supply main and is the identity the 2018 UMC expects you to apply when checking a sized duct.
4A 12-inch inside-diameter round spiral duct carries 1,000 CFM. What is the approximate average velocity?
A.800 feet per minute
B.1,020 feet per minute
C.1,270 feet per minute
D.1,530 feet per minute
Explanation: Round area is π × (D/12)² / 4. For a 12-inch duct, D/12 = 1.00 ft, so area = 0.785 square feet. Velocity is 1,000 ÷ 0.785 ≈ 1,273 FPM, which rounds to about 1,270 FPM. Do not use the rectangular (W × H)/144 formula on a round duct.
5A 16-inch by 10-inch rectangular branch must run at 900 FPM. What airflow does that duct carry?
A.800 CFM
B.900 CFM
C.1,000 CFM
D.1,200 CFM
Explanation: Area is (16 × 10) / 144 = 1.111 square feet. Airflow is velocity times area: 900 FPM × 1.111 sq ft = 1,000 CFM. Q = A × V is the same identity used to check Manual D or other approved duct sizes under 2018 UMC Section 601.2.
6A 20-inch by 12-inch rectangular main carries 1,800 CFM. What is the average velocity?
A.1,200 feet per minute
B.1,440 feet per minute
C.900 feet per minute
D.1,080 feet per minute
Explanation: Area is (20 × 12) / 144 = 1.667 square feet. Velocity is 1,800 ÷ 1.667 = 1,080 FPM. That is a reasonable commercial-main velocity and is obtained only if both dimensions are converted with the 144 factor.
7Per the 2018 Uniform Mechanical Code Section 601.2, blower-type heating, cooling, and ventilation duct systems shall be sized in accordance with which method?
A.Only the International Residential Code Appendix M
B.Only equal-friction charts printed on the fan carton
C.Any shop rule of thumb the installer prefers
D.ACCA Manual D, or other approved methods
Explanation: 2018 UMC Section 601.2 requires duct systems that are portions of blower-type heating, cooling, absorption, evaporative-cooling, or outdoor-air ventilation systems to be sized in accordance with ACCA Manual D as listed in Table 1701.1, or by other approved methods. Guessing a size from a fan label or an unlisted rule of thumb is not an approved method.
8Under the 2018 UMC commercial length limitation for factory-made flexible air ducts and connectors used as an elbow at a terminal device, what is the maximum permitted length?
A.14 feet
B.25 feet
C.3 feet
D.5 feet
Explanation: 2018 UMC Section 603.4.1 limits factory-made flexible air ducts and connectors used as an elbow at a terminal device to 5 feet and does not allow flex to replace rigid elbows or fittings in commercial buildings. The 14-foot figure is a common flexible-connector limit in other codes, not this UMC commercial elbow rule. Residential occupancies retain a longer-flex exception.
9Per the 2018 UMC, plastic air ducts and fittings are limited to which installation and maximum design temperature?
A.Grease ducts serving Type I hoods, 250°F
B.Exposed rooftop mains, 180°F
C.Above-grade supply only, 200°F
D.Underground installations only, 150°F
Explanation: 2018 UMC plastic-duct provisions require PVC duct with a minimum pipe stiffness of 8 psi at 5 percent deflection (ASTM D2412). Fittings may be PVC or high-density polyethylene. Plastic duct and fittings are for underground installations only, and the maximum design temperature is 150°F (66°C). Plastic is not a grease-duct material.
10What minimum pipe stiffness does the 2018 UMC require for underground PVC plastic air duct when tested in accordance with ASTM D2412?
A.12 psi at 10 percent deflection
B.25 psi at 5 percent deflection
C.4 psi at 5 percent deflection
D.8 psi at 5 percent deflection
Explanation: The 2018 UMC requires plastic ducts to be PVC with a minimum pipe stiffness of 8 psi (55 kPa) at 5 percent deflection when tested to ASTM D2412. That stiffness keeps buried duct from collapsing under soil and traffic loads. Fittings may be PVC or HDPE, but they remain underground-only.

About the NV C-1E Sheet Metal Exam

The Nevada C-1E Sheet Metal Contractor Examination is the official Nevada State Contractors Board trade or management examination administered by PSI Services LLC. The official exam has 60 scored questions. Passing is 70% (42 of 60 points) in 2.5 hours. The examination is open book. Approved center references include Uniform Mechanical Code, 2018 (allowed in center). PSI lists USD 95 for one examination portion and USD 140 if taken with CMS; otherwise USD 95 per trade exam (Candidate Information Bulletin updated 3/25/2026). NSCB requires a separate CMS examination for most new applicants, plus a USD 300 application fee and a USD 600 biennial license fee. This English-language MCQ bank is a study aid, not an official PSI form. It does not replace required trade experience, board approval, fingerprints, bonding, or the official examination.

Assessment

Open Book computer-based multiple-choice. Uniform Mechanical Code, 2018 (allowed in center)

Time Limit

2.5 hours

Passing Score

70% (42 of 60 points)

Exam Fee

USD 95 (PSI Services LLC (for the Nevada State Contractors Board))

NV C-1E Sheet Metal Exam Content Outline

33%

Ducts

Sheet-metal ducts (20 items)

13%

Chimneys, Flues, and Vents

Chimneys, flues, and vents (8 items)

17%

Hoods, Ventilation, Equipment, and Food Service Equipment

Hoods and food-service equipment (10 items)

17%

Metal Roofing Systems, Flashing, and Architectural Metals

Metal roofing and flashing (10 items)

8%

Gutters and Downspouts

Gutters and downspouts (5 items)

7%

Tools and Equipment

Sheet-metal tools (4 items)

5%

Safety

Sheet-metal safety (3 items)

How to Pass the NV C-1E Sheet Metal Exam

What You Need to Know

  • Passing score: 70% (42 of 60 points)
  • Assessment: Open Book computer-based multiple-choice. Uniform Mechanical Code, 2018 (allowed in center)
  • Time limit: 2.5 hours
  • Exam fee: USD 95

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

NV C-1E Sheet Metal Study Tips from Top Performers

1Distribute study time to the official bulletin 270 content outline (updated 3/25/2026)
2Use only the PSI-listed references; temporary tabs such as Post-it notes are prohibited
3Confirm NSCB experience documentation before scheduling with PSI
4This bank is an English-language MCQ study aid, not an official PSI form

Frequently Asked Questions

How many questions are on the Nevada C-1E Sheet Metal Contractor Examination?

The official PSI examination has 60 scored questions. Passing is 70% (42 of 60 points) within 2.5 hours (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-1E Sheet Metal exam cost?

PSI lists USD 95 for one examination portion. Two portions cost USD 140 only if the second portion is CMS. NSCB charges a separate USD 300 application fee and USD 600 biennial license fee.

Is the NV C-1E Sheet Metal exam open book?

Yes. PSI lists this examination as open book. Uniform Mechanical Code, 2018 (allowed in center)

Do I still need the CMS examination?

CMS is the required Nevada business-and-law examination. Most new applicants must pass CMS and a trade examination for the requested classification. In most cases you will not retake an exam if you have actively served as a qualified employee in the same classification within the last four years.