NAUI INSTRUCTOR EXAM STUDY GUIDE LATEST 2026 UPDATED
QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027)
GRADE: A+|STATUS: GUARANTEED PASS
The terms "set" and "drift" refer to a current's: - Answers -Direction and velocity
Modern Cylinders - Answers -Steel or Aluminum
Internal valve types for first stages - Answers -Diaphragm & Pistol
Most common SPG - Answers -Sealed Bourdon Tube
Two most common computer models - Answers -Tissue & Table based
Two Stage regulator - Answers -Reg reduced cylinder pressure to ambient pressure in two steps
Purpose of a Hydrostatic test - Answers -To determine permanent expansion of a cylinder
Modern regulator performance is defined in terms of - Answers -Max respiratory work level
1|Page
,Alpha flag represents - Answers -A vessel restricted in its ability to maneuver
Which of the following is not part of the cylinder valve? - Answers -Diaphragm
Burst disc assembly - Answers -Prevents cylinder rupture in the event of over pressurization
Benefit of a Capillary tube depth gage - Answers -Automatically provides equivalent depth
readings
when used at higher elevations
first stage filters that appear green in color may be an indication of what? - Answers -Corrosion
from moisture in the cylinder
Boyles Law - Answers -Pressure increases as volume decreases
IVERSLEY PROPORTUNATE
Index marks on a compass - Answers -Temporarily mark the bearing that is indicated by the
north-seeking needle
2|Page
, Where does gas exchange occur in the body - Answers -Alveolar-capillary membrane
Two main benefits to Nitrox - Answers -Longer dive times & Shorter SIT
Inert gas means - Answers -Our bodies do not use the gas
Daltons Law - Answers -The partial pressure of any gas in a mixture is directly related to the
fraction of the gas in the total mixture
Central Nervous System (CNS) Oxygen Toxicity results from: - Answers -Relatively short
exposures to high oxygen partial pressures
ConVENTID (oxygen poisoning) - Answers -Convulsions
Vision (blurriness)
Ears (ringing)
Nausea
Twitching
Irritability
Dizziness
3|Page
QUESTIONS AND VERIFIED 100% SOLUTIONS (2026/2027)
GRADE: A+|STATUS: GUARANTEED PASS
The terms "set" and "drift" refer to a current's: - Answers -Direction and velocity
Modern Cylinders - Answers -Steel or Aluminum
Internal valve types for first stages - Answers -Diaphragm & Pistol
Most common SPG - Answers -Sealed Bourdon Tube
Two most common computer models - Answers -Tissue & Table based
Two Stage regulator - Answers -Reg reduced cylinder pressure to ambient pressure in two steps
Purpose of a Hydrostatic test - Answers -To determine permanent expansion of a cylinder
Modern regulator performance is defined in terms of - Answers -Max respiratory work level
1|Page
,Alpha flag represents - Answers -A vessel restricted in its ability to maneuver
Which of the following is not part of the cylinder valve? - Answers -Diaphragm
Burst disc assembly - Answers -Prevents cylinder rupture in the event of over pressurization
Benefit of a Capillary tube depth gage - Answers -Automatically provides equivalent depth
readings
when used at higher elevations
first stage filters that appear green in color may be an indication of what? - Answers -Corrosion
from moisture in the cylinder
Boyles Law - Answers -Pressure increases as volume decreases
IVERSLEY PROPORTUNATE
Index marks on a compass - Answers -Temporarily mark the bearing that is indicated by the
north-seeking needle
2|Page
, Where does gas exchange occur in the body - Answers -Alveolar-capillary membrane
Two main benefits to Nitrox - Answers -Longer dive times & Shorter SIT
Inert gas means - Answers -Our bodies do not use the gas
Daltons Law - Answers -The partial pressure of any gas in a mixture is directly related to the
fraction of the gas in the total mixture
Central Nervous System (CNS) Oxygen Toxicity results from: - Answers -Relatively short
exposures to high oxygen partial pressures
ConVENTID (oxygen poisoning) - Answers -Convulsions
Vision (blurriness)
Ears (ringing)
Nausea
Twitching
Irritability
Dizziness
3|Page
