Dive Master NAUI Exam 2024 | NAUI Diving
Master Actual Exam 2024 Questions and
Correct Answers Rated A+
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
Which diving instrument incorporates a Bourdon tube mechanism? -
ANSWER-Cylinder pressure gauges
Two benefits derived from using an electronic dive computer are
_____. -ANSWER-Accurate monitoring of ascent rate and, if executing
a multi-level diving profile, avoidance of the maximum time/depth
penalty
Green discoloration on the first stage of a scuba regulator indicates
_____. -ANSWER-Water has most likely entered the first stage
An air compressor used for filling scuba cylinders operates by the
principle of _____. -ANSWER-Boyle's Law
Dry suits form a waterproof barrier, but require undergarments to be
effective in cold water -ANSWER-True
In order to make an informed decision on equipment purchase, you
need to have a solid educational background concerning the _____ of
, diving equipment: -ANSWER-Types, Method of operation, Care and
maintenance
The distance between successive wave crests is defined as _____. -
ANSWER-Wavelength
The highest tides are called _____ tides, and the lowest tides are
called _____ tides. -ANSWER-spring; neap
Water rocking back and forth in a lake or a bay is defined as _____. -
ANSWER-Seiching
The effect of the moon on tidal action is about _____. -ANSWER-
Twice the effect of the sun
The type of breaking wave that produces the greatest force when
breaking is the _____ breaker. -ANSWER-Plunging
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
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