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Key Facts: NV Automatic 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-41A Automatic 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 Automatic Fire Sprinklers Practice Questions

Try these sample questions to review concepts for the NV Automatic Fire Sprinklers exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Under NAC 624.572, which water-based assemblies may a Nevada C-41A Automatic Fire Sprinklers contractor fabricate, install, alter, repair, and service?
A.Required pressure and storage tanks, fire pumps and drivers, sprinkler heads and nozzles, and all associated valves and piping
B.Sprinkler heads only; tanks, fire pumps, and underground supply piping require a separate utility license
C.Clean-agent cylinders, kitchen wet-chemical hood systems, and foam concentrate tanks
D.Fire-alarm control units, smoke detectors, and notification appliances
Explanation: NAC 624.572(2)(a) defines C-41A as water-based fire protection: tanks, fire pumps and drivers, sprinklers and nozzles, and the associated valves and piping. Control wiring, excavation, backfill, grading, and piping to an adjacent off-premises water supply are also inside that subclassification. Foam, gas, and dry-chemical systems are C-41B; detection and alarm wiring as a fire-alarm system is C-41C.
2In a deluge sprinkler system under NFPA 13 (2007), what is in the piping and how do the sprinklers operate?
A.Water fills the piping; each closed sprinkler opens independently when heated
B.Pressurized air fills the piping; only the fused sprinkler discharges
C.A double-interlock preaction valve waits for both detection and a fused sprinkler before filling closed piping
D.The sprinklers are open, and water is held at a deluge valve that opens on detection so every sprinkler discharges together
Explanation: A deluge system uses open sprinklers (no heat elements in the orifices) and a deluge valve. When the detection system operates, the valve opens and water floods every head on that system. NFPA 13 (2007) Chapter 7 reserves deluge for special high-challenge hazards, not ordinary freeze protection.
3Per NFPA 13 (2007) Table 6.2.5.1, what temperature classification and maximum ceiling temperature apply to sprinklers rated 175°F to 225°F?
A.Intermediate; 150°F maximum ceiling temperature
B.Ordinary; 100°F maximum ceiling temperature
C.High; 225°F maximum ceiling temperature
D.Extra high; 300°F maximum ceiling temperature
Explanation: Intermediate-temperature sprinklers are 175°F to 225°F and are permitted under ceilings up to 150°F. Ordinary is 135°F to 170°F with a 100°F ceiling limit. High is 250°F to 300°F with a 225°F ceiling limit. Frames in the intermediate band are colored white.
4A standard spray sprinkler has a blue frame and is rated 286°F. Which NFPA 13 (2007) temperature classification is that?
A.Ordinary
B.Intermediate
C.Ultra high
D.High
Explanation: NFPA 13 (2007) Table 6.2.5.1 places 250°F to 300°F in the high-temperature classification and colors those frames blue. A 286°F glass-bulb or fusible sprinkler is the common high-temperature product used near unit heaters, skylights, and other hot spots.
5When a gravity tank is the automatic water supply for a sprinkler system, what produces the working pressure at the base of the riser?
A.A fire pump that must start before any sprinkler can flow
B.Compressed air occupying the top third of the tank
C.The fire department connection alone
D.The elevation of the water surface above the discharge, at about 0.433 psi per foot of water column
Explanation: NFPA 13 (2007) Chapter 23 recognizes gravity tanks as an automatic supply. Static pressure is the height of the water surface times 0.433 psi/ft. A tank whose water surface stands 80 ft above the top sprinklers yields about 35 psi before friction is subtracted. The tank must hold the required duration at the design flow.
6How does NFPA 13 (2007) require a pressure tank used as an automatic sprinkler water supply to be proportioned?
A.Completely full of water with no air cushion
B.One-half water and one-half air
C.One-third water and two-thirds air
D.Two-thirds water and one-third air under pressure
Explanation: A pressure tank stores both water and compressed air so the air cushion pushes water into the system when a sprinkler opens. NFPA 13 (2007) water-supply rules keep the tank about two-thirds full of water and one-third full of air. The air pressure plus the water column must meet residual demand at the remote heads.
7What kind of valve does NFPA 13 (2007) require for controlling a sprinkler system water supply?
A.A listed indicating valve, such as an OS&Y gate or a listed butterfly with a position indicator
B.Any non-indicating underground curb stop
C.A globe valve installed in the inverted position
D.A plumbing stop-and-waste valve
Explanation: NFPA 13 (2007) Chapter 8 requires listed indicating control valves so anyone at the valve can see whether it is open or shut. OS&Y gates show the stem; listed indicating butterfly valves show a flag or pointer. The valve must be accessible and supervised. A buried non-indicating curb stop does not meet that rule.
8Where is the inspector's test connection placed on a wet-pipe sprinkler system, and what orifice does it use?
A.At the hydraulically most remote point, with an orifice equal to the smallest sprinkler on that system
B.At the riser only, with an orifice larger than the largest sprinkler
C.On the fire department connection, with no orifice restriction
D.At every branch-line dead end, with a 2-inch drain
Explanation: NFPA 13 (2007) puts the inspector's test at the hydraulically most remote location so a waterflow alarm test proves that flow from a single small sprinkler will move water all the way through the system and operate the alarm. The test orifice matches the smallest sprinkler K-factor on that system.
9When is a wet-pipe sprinkler system the preferred automatic arrangement under NFPA 13 (2007)?
A.Wherever piping can be maintained above freezing
B.Only in Extra Hazard occupancies
C.Only in unheated loading docks
D.Never, because dry-pipe systems operate faster
Explanation: Wet-pipe systems keep water in the piping and operate as soon as a sprinkler fuses. NFPA 13 (2007) treats them as the default automatic system wherever freezing is not a threat. Dry, preaction, and deluge systems add delay or complexity and are used when freeze, water-damage, or special-hazard rules require them.
10Per NFPA 13 (2007) 6.9, when must a local waterflow alarm be provided on a sprinkler system?
A.On every system that has more than 20 sprinklers
B.Only on Extra Hazard systems
C.Only when the building also has a fire pump
D.Never on a wet-pipe system
Explanation: NFPA 13 (2007) 6.9.1 requires a listed local waterflow alarm on every sprinkler system that has more than 20 sprinklers. The device may be a water-motor gong, an electric bell driven by a flow or pressure switch, or another listed alarm. Small 20-or-fewer systems are the exception, not Extra Hazard or pump-equipped systems.

About the NV Automatic Fire Sprinklers Exam

The Nevada C-41A Automatic Fire Sprinklers Contractor Examination is the official Nevada State Contractors Board trade 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. NFPA 13 (2007), NFPA 14 (2007), NFPA 24 (2010), and 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 270, 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.

Exam sponsor: PSI Services LLC (for the Nevada State Contractors Board). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Open Book computer-based multiple-choice. NFPA 13 (2007), NFPA 14 (2007), NFPA 24 (2010), and NFPA 25 (2008) (allowed in center)

Time Limit

1.5 hours

Passing Score

32 of 45 points

Exam / Certification Fees

USD 95

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

36%

Sprinkler Systems

Sprinkler Systems (16 items)

36%

Standpipe Systems

Standpipe Systems (16 items)

18%

Inspection, Testing and Maintenance

Inspection, Testing and Maintenance (8 items)

11%

General Regulations

General Regulations (5 items)

Preparing for the NV Automatic 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 24 (2010), and NFPA 25 (2008) (allowed in center)
  • Time limit: 1.5 hours
  • Exam / certification fees: USD 95 Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
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NV Automatic Fire Sprinklers: Suggested Study Strategy

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-41A Automatic 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-41A 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-41A exam open book?

Yes. PSI lists this examination as open book. NFPA 13 (2007), NFPA 14 (2007), NFPA 24 (2010), and 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.