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100+ Free NV C-1B Fire Sprinklers Practice Questions

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Key Facts: NV C-1B Fire Sprinklers Exam

45 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

32 of 45 points

Passing Score

PSI Nevada Contractor CIB updated 3/25/2026

1.5 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-1B Fire Sprinklers Contractor Examination is the official NSCB/PSI open book exam: 45 questions, 32 of 45 points, 1.5 hours, USD 95 (bulletin 270, updated 3/25/2026). Official delivery: English.

Sample NV C-1B Fire Sprinklers Practice Questions

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

1Per NFPA 13 (2007), which occupancy hazard classification applies to typical offices, churches, educational classrooms, and hospital patient rooms?
A.Ordinary Hazard Group 1
B.Extra Hazard Group 1
C.Ordinary Hazard Group 2
D.Light Hazard
Explanation: NFPA 13 (2007) Chapter 5 classifies occupancies by quantity and combustibility of contents, not by building-code group. Offices, churches, classrooms, and hospital patient rooms are Light Hazard because the fuel load is low and fire is expected to develop slowly.
2What is the defining feature of a wet-pipe sprinkler system under NFPA 13 (2007)?
A.Water is in the piping at all times, and each sprinkler opens independently when heated
B.Air or nitrogen fills the piping until a dry-pipe valve trips
C.All sprinklers are open and water waits at a deluge valve
D.Water is admitted only after a separate detection system and a sprinkler both operate
Explanation: A wet-pipe system keeps water in the piping under pressure. Only the sprinklers that reach their rated temperature open. NFPA 13 (2007) treats wet pipe as the preferred automatic arrangement wherever freezing is not a concern.
3Where piping cannot be reliably kept above freezing, which automatic sprinkler system type is the usual NFPA 13 (2007) choice?
A.Standard wet-pipe without heat or listed antifreeze
B.Deluge with all open sprinklers
C.A pipe-schedule wet system with extra hangers
D.Dry-pipe, with air or nitrogen in the piping and water held at the dry-pipe valve
Explanation: Dry-pipe systems keep water out of the branch piping until a sprinkler opens and the dry-pipe valve trips. They are the standard automatic arrangement in NFPA 13 (2007) for loading docks, unheated attics, and similar spaces that can freeze.
4Which formula gives sprinkler discharge in the NFPA 13 (2007) hydraulic method?
A.Q = K√P, where Q is gpm, K is the sprinkler K-factor, and P is residual pressure at the sprinkler in psi
B.Q = P / K
C.Q = K × P
D.Q = K² × P
Explanation: Discharge is Q = K√P. Flow increases with the square root of pressure, so doubling pressure does not double flow. Every density/area calculation in NFPA 13 (2007) Chapter 11 starts from this relationship at each flowing sprinkler.
5What is the nominal K-factor of a standard 1/2-inch orifice spray sprinkler?
A.8.0
B.2.8
C.11.2
D.5.6
Explanation: A 1/2-inch nominal orifice spray sprinkler has K = 5.6. That value is used in Q = K√P and is the baseline against which large-orifice (K-8.0) and extra-large-orifice sprinklers are compared in NFPA 13 (2007).
6Unless a listed exception applies, new aboveground sprinkler piping is hydrostatically tested at which acceptance pressure and duration per NFPA 13 (2007)?
A.150 psi for 1 hour
B.100 psi for 2 hours
C.250 psi for 30 minutes
D.200 psi for 2 hours, or 50 psi above maximum working pressure if that working pressure exceeds 150 psi
Explanation: NFPA 13 (2007) Chapter 24 requires a 2-hour hydrostatic test at 200 psi, or at 50 psi above the maximum system working pressure when that working pressure is more than 150 psi. The test confirms joints and fittings will hold before the system is placed in service.
7What is the ordinary temperature classification range for automatic sprinklers in NFPA 13 (2007)?
A.135°F to 170°F
B.175°F to 225°F
C.250°F to 300°F
D.100°F to 130°F
Explanation: Ordinary-temperature sprinklers are rated 135°F to 170°F, with 155°F the most common glass-bulb rating. They are used where maximum ceiling temperature does not exceed 100°F. Intermediate or higher ratings are required near heat sources or under hot ceilings.
8What is the minimum residual operating pressure at a standard spray sprinkler unless the listing requires a higher value?
A.5 psi
B.15 psi
C.10 psi
D.7 psi
Explanation: NFPA 13 (2007) sets a 7 psi minimum residual at each flowing standard spray sprinkler. The minimum exists so the deflector can form a complete spray pattern. Listed residential or storage sprinklers may require a higher pressure.
9Unless a storage-specific rule applies, what is the minimum clearance from the sprinkler deflector to the top of storage per NFPA 13 (2007)?
A.18 inches
B.12 inches
C.24 inches
D.36 inches
Explanation: NFPA 13 (2007) requires at least 18 inches between the deflector and the top of storage for standard spray sprinklers. That gap lets the spray pattern develop. ESFR and in-rack rules can change the clearance, but 18 inches is the ordinary occupancy default.
10Per NFPA 13 (2007) Table 11.2.3.1.2, what combined inside-and-outside hose stream allowance is added to Light Hazard sprinkler demand?
A.100 gpm
B.50 gpm
C.250 gpm
D.500 gpm
Explanation: Table 11.2.3.1.2 of NFPA 13 (2007) assigns 100 gpm of combined hose stream to Light Hazard, with a 30-minute duration. That hose flow is added to the hydraulically calculated sprinkler demand at the water-supply connection, not at every remote sprinkler.

About the NV C-1B Fire Sprinklers Exam

The Nevada C-1B Fire Sprinklers Contractor Examination is the official Nevada State Contractors Board trade or management examination administered by PSI Services LLC. The official exam has 45 scored questions. Passing is 32 of 45 points in 1.5 hours. The examination is open book. Approved center references include NFPA 13 (2007), NFPA 14 (2007), NFPA 25 (2008) (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. NFPA 13 (2007), NFPA 14 (2007), NFPA 25 (2008) (allowed in center)

Time Limit

1.5 hours

Passing Score

32 of 45 points

Exam Fee

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

NV C-1B Fire Sprinklers Exam Content Outline

36%

Sprinkler Systems

NFPA 13 sprinkler systems (16 items)

36%

Standpipe Systems

NFPA 14 standpipes (16 items)

18%

Inspection, Testing and Maintenance

NFPA 25 ITM (8 items)

11%

General Regulations

General fire-protection rules (5 items)

How to Pass the NV C-1B Fire Sprinklers Exam

What You Need to Know

  • Passing score: 32 of 45 points
  • Assessment: Open Book computer-based multiple-choice. NFPA 13 (2007), NFPA 14 (2007), NFPA 25 (2008) (allowed in center)
  • Time limit: 1.5 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-1B Fire Sprinklers 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-1B Fire Sprinklers Contractor Examination?

The official PSI examination has 45 scored questions. Passing is 32 of 45 points within 1.5 hours (Candidate Information Bulletin 270, updated 3/25/2026).

How much does the NV C-1B Fire Sprinklers 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-1B Fire Sprinklers exam open book?

Yes. PSI lists this examination as open book. NFPA 13 (2007), NFPA 14 (2007), NFPA 25 (2008) (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.