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100+ Free NV A-10E Pool Alteration Practice Questions

Prepare for the Nevada A-10E Pool Alteration and Repair Contractor Examination exam with instant access — no signup required.

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2026 Statistics

Key Facts: NV A-10E Pool Alteration 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-10E Pool Alteration and Repair 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-10E Pool Alteration Practice Questions

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

1In pool circulation design, what does turnover time measure?
A.The time required to heat the pool 10 degrees Fahrenheit
B.The period required to circulate a volume of water equal to the pool or spa capacity through the treatment system
C.The time between backwashes of a sand filter
D.The life of the filter media before replacement
Explanation: Turnover time is the period needed to pass a volume of water equal to the vessel capacity through the recirculation and treatment system. USPSHTC 2018 and Nevada public-pool rules size pumps and filters from that required turnover, not from heater runtime or media life. Replacement equipment on an A-10E job must still deliver the turnover required for that vessel.
2Under NAC 444.152, a Nevada public bathing or swimming facility recirculation system must recirculate, clarify, and disinfect the facility volume at least how often?
A.Every 12 hours or less
B.Every 8 hours or less
C.Every 6 hours or less
D.Once every 24 hours
Explanation: NAC 444.152 requires a public-facility recirculation system to treat the facility volume every 6 hours or less, except for certain water-recreation attractions and wading pools that have shorter cycles. A-10E commercial pump or filter replacements must be sized to restore that 6-hour public-pool turnover. Residential backyard pools are not automatically held to this public-health cycle.
3NAC 444.484 requires circulation and filtration equipment on a Nevada public spa to recirculate the entire spa volume at least once every:
A.6 hours
B.2 hours
C.60 minutes
D.30 minutes
Explanation: NAC 444.484 requires public-spa equipment to recirculate the entire spa capacity at least once every 30 minutes because spas have high bather density and elevated temperature. When an A-10E contractor replaces a commercial spa pump or filter, the new equipment must still meet that 30-minute turnover. A 6-hour swimming-pool cycle is far too slow for a public spa.
4Which three filter types are the standard media options when replacing pool or spa filtration equipment?
A.Sand, diatomaceous earth (DE), and cartridge
B.Gravel, zeolite only, and reverse-osmosis membrane
C.Bag, carbon, and ion-exchange resin
D.Screen, sock, and paper-roll
Explanation: USPSHTC 2018 and NSF/ANSI 50 address high-rate sand, diatomaceous-earth, and cartridge filters as the common listed pool and spa media types. Each has a different loading rate, cleaning method, and replacement parts (sand, DE grids, or cartridges). Gravel-only, RO, or HVAC-style bags are not the standard recirculation-filter replacements on an A-10E job.
5A sand filter on a hotel pool reads 10 psi when clean. When should the A-10E technician backwash?
A.When the gauge returns to 0 psi
B.On a fixed 24-hour clock regardless of pressure
C.When operating pressure rises about 8 to 10 psi above the clean starting pressure
D.Only when the water is visibly green
Explanation: Industry practice and manufacturer instructions call for backwashing a sand or DE filter when differential pressure rises about 8 to 10 psi above the clean baseline. On this hotel filter the trigger is about 18 to 20 psi. Backwashing on a clock, at 0 psi, or only after algae appears wastes water or lets the filter pack and channel.
6Before moving a multiport filter valve from FILTER to BACKWASH, the technician must first:
A.Increase the heater thermostat to high
B.Shut off the circulating pump
C.Open the main drain all the way and close all skimmers
D.Add a full charge of DE to the skimmer
Explanation: The pump must be off before the multiport spider gasket is rotated. Moving the valve under flow can tear the gasket, warp the rotor, and send pressurized water out the waste or backwash port. Heater settings, drain/skimmer balance, and DE charging are separate steps and are never done with the valve in motion.
7A 21,600-gallon commercial pool must turn over in 6 hours. What minimum recirculation flow is required?
A.36 gpm
B.48 gpm
C.60 gpm
D.90 gpm
Explanation: Required flow equals volume divided by turnover minutes: 21,600 gallons / (6 hours × 60 minutes) = 21,600 / 360 = 60 gpm. Replacement pumps and filters on an A-10E commercial job must deliver at least this flow with clean media at the system total dynamic head. 36 gpm is an 10-hour cycle; 90 gpm is a 4-hour cycle.
8NAC 444.152 requires which pair of gauges on a public recirculation system?
A.A temperature gauge on the heater only and a chlorine residual chart
B.A vacuum gauge on or immediately before the pump suction and a pressure gauge immediately after the pump
C.Two pressure gauges, both on the filter influent
D.A flow meter only; gauges are optional on commercial systems
Explanation: NAC 444.152 requires a vacuum gauge on or immediately before the pump on the suction side and a pressure gauge immediately after the pump on the pressure side. Those readings diagnose a clogged strainer, a closed suction valve, a dirty filter, or a failing impeller. A-10E replacements on commercial work must restore both gauges; a flow meter is also good practice but does not replace them.
9Where is the pump hair-and-lint strainer installed in a typical pool recirculation train?
A.On the heater outlet, after the heat exchanger
B.On the pump suction, before the impeller
C.On the filter waste line only
D.After the chemical feeder
Explanation: The hair-and-lint strainer sits on the pump suction so debris is caught before it reaches the impeller. A missing or cracked lid, a full basket, or a bad O-ring causes air leaks, loss of prime, and cavitation. Strainers are not installed after the heater or feeder, where they would not protect the pump.
10After backwashing a diatomaceous-earth (DE) filter, what additional step is required before returning the system to FILTER?
A.Replace the sand laterals
B.Recharge the grids with the manufacturer’s specified charge of fresh DE
C.Fill the tank with muriatic acid
D.Remove the grids and discard them after every backwash
Explanation: Backwashing strips the DE cake off the grids. The filter will not clarify water until a fresh, measured DE charge is slurried back onto the fabric. Skipping the recharge sends unfiltered water to the pool and can allow dirt to embed in the cloth. Grids are reused until torn; sand laterals belong in sand filters.

About the NV A-10E Pool Alteration Exam

The Nevada A-10E Pool Alteration and Repair 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-10E Pool Alteration Exam Content Outline

25%

Filtration/Circulation Systems

Pumps, filters, and heaters (10 items)

20%

Maintenance and Operation

Alteration and service (8 items)

28%

Accessories and Associated Trades

Tile, coping, decks, timers, and lights (11 items)

8%

Pool and Spa Business Laws and Rules

Nevada pool contracting rules (3 items)

12%

Design

Alteration design (5 items)

8%

Soils and Earthwork

Soils affecting alterations (3 items)

How to Pass the NV A-10E Pool Alteration 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-10E Pool Alteration 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-10E Pool Alteration and Repair 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-10E Pool Alteration 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-10E Pool Alteration 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.