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Exam (elaborations)

Dive Master NAUI LATEST UPDATE!!
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  • Course
  • Naui scuba
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  • Naui Scuba

What pressure will a scuba cylinder with a rated working pressure of 3000 psig (207 bar), be exposed to during a hydrostatic test? - ANSWER 5000 psig (345 bar) Which principle represents one basis for the hydrostatic testing of scuba cylinders? - ANSWER Permanent expansion If a visual cylinde...

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  • September 14, 2024
  • 14
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • dive master naui
  • dive master naui latest update
  • what pressure will a scuba cylinder with a rated w
  • which principle represents one basis for the hydro

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  • Naui scuba
  • Naui scuba

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Dive Master NAUI LATEST UPDATE!!
What pressure will a scuba cylinder with a rated working pressure of 3000 psig (207 bar), be exposed to
during a hydrostatic test? - ANSWER 5000 psig (345 bar)



Which principle represents one basis for the hydrostatic testing of scuba cylinders? - ANSWER
Permanent expansion



If a visual cylinder inspection reveals corrosion inside a scuba cylinder, it may require cleaning by a
process called: - ANSWER Tumbling



Which of the following is considered proper care of a scuba cylinder? - ANSWER Preventing moisture
from entering the cylinder.



Two cylinder valves in common use today are: - ANSWER The K-valve and DIN valve.



Which valve is an example of a special scuba valve that is required for certain types of specialty diving
such as deep diving with a single cylinder? - ANSWER Y valve



Which internal valve designs are available in the first stage of scuba regulators? - ANSWER Piston;
Diaphragm



Which valve is unaffected by cylinder air pressure with regard to the force needed to operate the valve? -
ANSWER Balanced



Which regulator second stage design uses air pressure rather than mechanical leverage to open the main
valve? - ANSWER Pilot



In the event of a regulator first stage malfunction, which type of valve design would be likely to eliminate
air flow to the diver? - ANSWER Upstream

, When considering a regulator for purchase or use, an important point to remember is that certain
regulators may not be capable of delivering ______ flow rates at ______ cylinder pressure during an air
sharing emergency. - ANSWER high; low



If the water conditions are reasonable to make a beach dive, all of the following procedures are
suggested: - ANSWER Having your buoyancy compensator partially inflated for slight positive buoyancy.

Being fully equipped.

Getting as close to the water's edge as possible after timing the sets and lulls to match your entry with
the smallest waves.

Entering the water as quickly as possible immediately after a wave breaks, getting beyond the surf zone
quickly, before the next wave breaks.



When waves break on shore and the backrush is funneled through a narrow opening, the condition is
known as _____. - ANSWER A rip current



Currents in bodies of water are formed by _____. - ANSWER Surface winds, The rotation of the earth,
The influence of the sun and moon



Water of equal temperature at all levels is most likely to be found in a lake during the _____. - ANSWER
Spring



The horizontal boundary between waters of differing salinity is defined as a _____. - ANSWER Halocline



The four basic plant and animal life zones in the ocean are _____. - ANSWER Littoral, Planktonic,
Nektonic, Benthic



A marine animal whose tissues are toxic, either in part or entirety is _____. - ANSWER Poisonous



Scyphozoans, or true jellyfish, possess stinging cells within their tentacles called _____. - ANSWER
Nematocysts



Which creature poses a potential threat to divers in the freshwater environment? - ANSWER Alligator
snapping turtle

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