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100+ Free NV A-10C Pool and Spa Repair Practice Questions

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2026 Statistics

Key Facts: NV A-10C Pool and Spa Repair Exam

40 Q

Official Exam Questions

PSI Nevada Contractor CIB updated 3/25/2026

70%

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 A-10C Repair of Pools and Spas Contractor Examination is the official NSCB/PSI open book exam: 40 questions, 70% (28 of 40 points), 1.5 hours, USD 95 (bulletin 291, updated 3/25/2026). Official delivery: English.

Sample NV A-10C Pool and Spa Repair Practice Questions

Try these sample questions to test your NV A-10C Pool and Spa Repair exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1On a residential pool, turnover time is the period required to circulate a volume of water equal to which quantity?
A.The filter tank volume only
B.The spa jet circuit volume only
C.The entire pool water capacity
D.The skimmer throat volume only
Explanation: Turnover time is the period needed to circulate a volume of water equal to the entire pool capacity through the filtration system. USPSHTC 2018 and the Certified Pool-Spa Operator handbook treat turnover as a system-sizing and water-quality check, not a tank or skimmer measurement. After a plaster repair, that full-volume turnover is what keeps plaster dust moving into the filter.
2Which three filter media types are the standard residential circulation choices tested on the A-10C outline?
A.Sand, cartridge, and diatomaceous earth
B.Gravel, charcoal, and paper
C.Zeolite only, bag filters, and sock strainers
D.Ultraviolet lamps, ozone cells, and ionizers
Explanation: Residential pool circulation uses sand, cartridge, or diatomaceous earth (DE) filters. Those three media appear throughout USPSHTC 2018 Chapter 5 water-quality provisions and the CPO handbook used to write this PSI exam. UV, ozone, and ionizers are sanitizer or oxidizer accessories, not the three filter types.
3After a residential replaster, when should the circulation system be started?
A.Only after the plaster has air-cured for seven dry days
B.As soon as the pool is filled to the middle of the skimmer or specified waterline
C.After the first weekend of swimming
D.Only after the heater has run for two hours
Explanation: National Plasterers Council start-up practice, which the CPO and Ultimate Pool Maintenance references follow, is to start filtration as soon as the pool is full to the middle of the skimmer or the specified waterline. Fresh cementitious finish hydrates under water; leaving the pool sitting without circulation lets plaster dust settle and stain. Heaters stay off until plaster dust is gone.
4Before draining a residential pool for plaster replacement, why must a working hydrostatic relief path be confirmed?
A.To increase filter pressure during the drain
B.To keep the spa jets primed while the pool is empty
C.To vent air from the heater exchanger
D.To relieve groundwater pressure that can float or crack an empty shell
Explanation: A hydrostatic relief valve or plug lets groundwater enter a drained shell so uplift pressure does not float or crack the vessel. Ultimate Pool Maintenance and CPO practice treat this as a required drain check on in-ground pools, especially in high water-table or poorly draining soils. A-10C work almost always starts with a full drain, so this check is part of the repair, not optional extras.
5What is the primary job of a surface skimmer in a residential circulation system?
A.To heat return water before it enters the pool
B.To draw the surface layer of water and floating debris into the filter circuit
C.To replace the main-drain hydrostatic valve
D.To inject muriatic acid into the deep end
Explanation: A skimmer draws the contaminated surface film and floating debris into the circulation system. USPSHTC 2018 addresses surface skimmers as part of the circulation and water-quality package. During plaster work the waterline must finish so the weir can swing and the water sits at mid-skimmer, or surface-skimming fails after start-up.
6Compared with a typical residential swimming pool, a residential spa circulation system is sized for which turnover?
A.A much longer turnover because spa water is hotter
B.The same eight-to-ten-hour turnover used for large diving pools
C.No turnover, because spas rely only on jet pumps
D.A much shorter turnover, commonly about 30 minutes
Explanation: Spas have a high bather load per gallon and elevated temperature, so codes and the CPO handbook commonly require about a 30-minute turnover. USPSHTC 2018 Chapter 5 treats spa turnover as far shorter than swimming-pool turnover. Jet pumps provide hydrotherapy turbulence; they do not replace the filtration turnover circuit.
7Which pair of values is required to calculate turnover time in hours?
A.Pool surface area and coping width
B.Pool volume in gallons and circulation flow in gallons per minute
C.Filter tank diameter and sand mesh size only
D.Heater BTU rating and gas-line size
Explanation: Turnover hours equal pool gallons divided by (flow in gpm × 60). That is the CPO and USPSHTC hydraulic relationship used to check whether a residential system can actually move the pool volume. Surface area, tank diameter, or heater size cannot produce a turnover time.
8Why is the filter commonly run continuously for the first several days after a residential plaster replacement?
A.To bake the plaster dry with pump heat
B.To keep plaster dust suspended and captured instead of settling as scale or stain
C.To empty the pool through the backwash line
D.To satisfy a commercial four-hour public-pool turnover that A-10C work must meet
Explanation: Fresh plaster releases cementitious dust. Continuous circulation plus twice-daily brushing keeps that dust in suspension so the filter can remove it. NPC and Tamminen start-up practice call for 24-hour filtration until the water clears. A-10C is a residential plaster/coping/deck-coating classification; it does not impose commercial public-pool turnover rules.
9A 18,000-gallon residential pool is circulating at 50 gpm. What is the turnover time?
A.3.0 hours
B.6.0 hours
C.8.0 hours
D.12.0 hours
Explanation: Turnover hours = 18,000 ÷ (50 × 60) = 18,000 ÷ 3,000 = 6.0 hours. Six hours is a common residential/public-pool target in CPO math and is well inside the typical 6- to 8-hour residential range. Always use measured flow, not the pump nameplate, when checking start-up circulation after a replaster.
10During plaster start-up, when should a residential sand filter typically be backwashed?
A.Whenever the pressure gauge has risen about 8 to 10 psi above the clean starting pressure
B.Once a year on the anniversary of the plaster date
C.Only when the spa jets feel weak
D.Every hour, whether pressure has changed or not
Explanation: CPO and manufacturer practice is to backwash a sand filter when differential or filter pressure rises about 8 to 10 psi above the clean reading, or when flow drops off. Plaster dust loads a filter fast, so that rise often happens repeatedly in the first week. Calendar dates and spa-jet feel are not the backwash trigger.

About the NV A-10C Pool and Spa Repair Exam

The Nevada A-10C Repair of Pools and Spas Contractor Examination is the official Nevada State Contractors Board trade or management examination administered by PSI Services LLC. The official exam has 40 scored questions. Passing is 70% (28 of 40 points) in 1.5 hours. The examination is open book. 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. See the current PSI Nevada contractor bulletin for allowed and closed-book references.

Time Limit

1.5 hours

Passing Score

70% (28 of 40 points)

Exam Fee

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

NV A-10C Pool and Spa Repair Exam Content Outline

25%

Filtration/Circulation Systems

Repair of circulation equipment (10 items)

20%

Maintenance and Operation

Service and operation (8 items)

28%

Accessories and Associated Trades

Plaster, coping, and deck coatings (11 items)

8%

Pool and Spa Business Laws and Rules

Nevada pool contracting rules (3 items)

12%

Design

Repair design decisions (5 items)

8%

Soils and Earthwork

Soils affecting repairs (3 items)

How to Pass the NV A-10C Pool and Spa Repair Exam

What You Need to Know

  • Passing score: 70% (28 of 40 points)
  • Assessment: Open Book computer-based multiple-choice. See the current PSI Nevada contractor bulletin for allowed and closed-book references.
  • 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 A-10C Pool and Spa Repair Study Tips from Top Performers

1Distribute study time to the official bulletin 291 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 A-10C Repair of Pools and Spas Contractor Examination?

The official PSI examination has 40 scored questions. Passing is 70% (28 of 40 points) within 1.5 hours (Candidate Information Bulletin 291, updated 3/25/2026).

How much does the NV A-10C Pool and Spa Repair 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 A-10C Pool and Spa Repair exam open book?

Yes. PSI lists this examination as open book. Bring only the bulletin-listed references with permanent tabs; temporary tabs are prohibited.

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.