NAUI IQP - Environment & Equipment
Exam Questions and Answers
What pressure will a scuba cylinder with a rated working pressure of 3000 psig (207
bar), be exposed to during a hydrostatic test?
a.5000 psig (345 bar)
b.4280 psig (293 bar)
c.2250 psig (155 bar)
d.4980 psig (414 bar) - a.5000 psig (345 bar)
Which principle represents one basis for the hydrostatic testing of scuba cylinders?
Permanent expansion. Stationary expansion. Indefinite expansion. Soluble expansion. -
Permanent expansion
If a visual cylinder inspection reveals corrosion inside a scuba cylinder, it may require
cleaning by a process called:
Stripping.Tumbling. Grinding. Sand Blasting. - Tumbling
In order to make an informed decision on equipment purchase, you need to have a solid
educational background concerning the _____ of diving equipment:
Types
Method of operation
Care and maintenance
All of the above - All of the above
The distance between successive wave crests is defined as _____.
Wave period
Wave sets
Wavelength
Swell period - Wavelength
Q: The tides with the largest change are called ________ tides, and the lowest change
are called _______ tides.
neap; spring
spring; neap
diurnal; semi-diurnal
neap; dinural - spring; neap
Water rocking back and forth in a lake or a bay is defined as _____.
Upwelling
, Seiche
Surf zone
Breaker zone - Seiche
The effect of the moon on tidal action is about _____.
Half the effect of the sun
Twice the effect of the sun
Equal to the effect of the sun
The same as the effect of the sun - Twice the effect of the sun
The type of breaking wave that produces the greatest force when breaking is the _____
breaker.
Spilling
Plunging
Rolling
Turbulent - Plunging
Which of the following is considered proper care of a scuba cylinder?
Exceeded the maximum allowable working pressure when filling.Preventing moisture
from entering the cylinder. Filling cylinders rapidly, approximately 1000 to 1500 psig (69
to 103 bar) per minute. Heating cylinders to a high temperature. - Preventing moisture
from entering the cylinder
Two cylinder valves in common use today are:
The K-valve and DIN valve. The R-valve and B- valve. The X-valve and DIN valve. The
B-valve and K-valve. - 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?
Y valve J valve K valve R valve - Y valve
Which internal valve designs are available in the first stage of scuba regulators?
Diaphragm; Pump
Piston; Diaphragm
Rod; Lifter
Ring; Shaft - Piston; Diaphragm
Which valve is unaffected by cylinder air pressure with regard to the force needed to
operate the valve?
Unbalanced
Direct
Balanced
Linear - Balanced
Which regulator second stage design uses air pressure rather than mechanical leverage
to open the main valve?
Exam Questions and Answers
What pressure will a scuba cylinder with a rated working pressure of 3000 psig (207
bar), be exposed to during a hydrostatic test?
a.5000 psig (345 bar)
b.4280 psig (293 bar)
c.2250 psig (155 bar)
d.4980 psig (414 bar) - a.5000 psig (345 bar)
Which principle represents one basis for the hydrostatic testing of scuba cylinders?
Permanent expansion. Stationary expansion. Indefinite expansion. Soluble expansion. -
Permanent expansion
If a visual cylinder inspection reveals corrosion inside a scuba cylinder, it may require
cleaning by a process called:
Stripping.Tumbling. Grinding. Sand Blasting. - Tumbling
In order to make an informed decision on equipment purchase, you need to have a solid
educational background concerning the _____ of diving equipment:
Types
Method of operation
Care and maintenance
All of the above - All of the above
The distance between successive wave crests is defined as _____.
Wave period
Wave sets
Wavelength
Swell period - Wavelength
Q: The tides with the largest change are called ________ tides, and the lowest change
are called _______ tides.
neap; spring
spring; neap
diurnal; semi-diurnal
neap; dinural - spring; neap
Water rocking back and forth in a lake or a bay is defined as _____.
Upwelling
, Seiche
Surf zone
Breaker zone - Seiche
The effect of the moon on tidal action is about _____.
Half the effect of the sun
Twice the effect of the sun
Equal to the effect of the sun
The same as the effect of the sun - Twice the effect of the sun
The type of breaking wave that produces the greatest force when breaking is the _____
breaker.
Spilling
Plunging
Rolling
Turbulent - Plunging
Which of the following is considered proper care of a scuba cylinder?
Exceeded the maximum allowable working pressure when filling.Preventing moisture
from entering the cylinder. Filling cylinders rapidly, approximately 1000 to 1500 psig (69
to 103 bar) per minute. Heating cylinders to a high temperature. - Preventing moisture
from entering the cylinder
Two cylinder valves in common use today are:
The K-valve and DIN valve. The R-valve and B- valve. The X-valve and DIN valve. The
B-valve and K-valve. - 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?
Y valve J valve K valve R valve - Y valve
Which internal valve designs are available in the first stage of scuba regulators?
Diaphragm; Pump
Piston; Diaphragm
Rod; Lifter
Ring; Shaft - Piston; Diaphragm
Which valve is unaffected by cylinder air pressure with regard to the force needed to
operate the valve?
Unbalanced
Direct
Balanced
Linear - Balanced
Which regulator second stage design uses air pressure rather than mechanical leverage
to open the main valve?
