SSI Assistant Instructor Pre Test Exam
Question with 100% Verified Answers
Latest Version
Assuming a maximum partial pressure limitation of 1.4 bar,
the maximum depth for a 32% nitrox mixture is ____ of
seawater.
33.7 m
20 m
66 m
43.7 m
33.7 m
Which physical law states: "If temperature remains constant,
the pressure and volume of any gas are inversely related"?
Dalton
Henry
Archimedes
Boyle
Save
Boyle
For every meter of depth in freshwater, pressure changes by:
0.013 bar
0.098 bar
0.100 bar
1.03 bar
0.098 bar
diver and his / her equipment weigh 87 kg when neutrally
buoyant in saltwater. To be neutrally buoyant for freshwater
diving with the same equipment, he /she has to:
Add weight
All answers are correct
,Use the same weight
Remove weight
Remove weight
If 2 liters of air are needed in your buoyancy compensator to
maintain neutral buoyancy at 10m in the ocean, what will
happen to your buoyancy if you ascend 3 m without
deflating:
Your positive buoyancy will increase
There will be no change in buoyancy
Your negative buoyancy will increase
You will stay neutral no matter if you ascend or descend
Your positive buoyancy will increase
Breathing gas consumption:
Varies inversely with depth
Increases as depth increases
Decreases as depth increases
Remains the same as depth increases
Increases as depth increases
The ocean depth at which the partial pressure of oxygen in
air equals 1.6 bar is _____ meters assuming O2 = 21%.
70
85
66
55
66
Assuming a maximum partial pressure limitation of 1.4 bar,
the maximum MOD for a 40% nitrox mixture in the ocean is:
35 meters
25 meters
40 meters
20 meters
25 meters
, The absolute pressure at a depth of 50 meters in salt water
is:
5.012 bar
6.000 bar
5.000 bar
5.901 bar
6.000 bar
What would be the surface air consumption rate (SAC) of a
diver with a 200bar, 10 liter cylinder who uses 50bar in 10
minutes at a depth of 10 meters in the ocean?
25 liters / minute
50 liters / minute
35 liters / minute
10 liters / minute
25 liters / minute
If you have difficulty equalizing pressure in your
ears/sinuses while descending, you should:
Ascend 2 meters and force equalization
Stop and wait until the discomfort subsides
Ascend until the pressure is relieved and then attempt
equalization
Return to the surface and re-initiate the descent
Ascend until the pressure is relieved and then attempt
equalization
A lung rupture can occur with over-pressurization in water as
shallow as:
5.0m
1.2m
3.5m
4.0m
1.2m
The recommended method to avoid sinus squeezes and
reverse blocks is to:
Question with 100% Verified Answers
Latest Version
Assuming a maximum partial pressure limitation of 1.4 bar,
the maximum depth for a 32% nitrox mixture is ____ of
seawater.
33.7 m
20 m
66 m
43.7 m
33.7 m
Which physical law states: "If temperature remains constant,
the pressure and volume of any gas are inversely related"?
Dalton
Henry
Archimedes
Boyle
Save
Boyle
For every meter of depth in freshwater, pressure changes by:
0.013 bar
0.098 bar
0.100 bar
1.03 bar
0.098 bar
diver and his / her equipment weigh 87 kg when neutrally
buoyant in saltwater. To be neutrally buoyant for freshwater
diving with the same equipment, he /she has to:
Add weight
All answers are correct
,Use the same weight
Remove weight
Remove weight
If 2 liters of air are needed in your buoyancy compensator to
maintain neutral buoyancy at 10m in the ocean, what will
happen to your buoyancy if you ascend 3 m without
deflating:
Your positive buoyancy will increase
There will be no change in buoyancy
Your negative buoyancy will increase
You will stay neutral no matter if you ascend or descend
Your positive buoyancy will increase
Breathing gas consumption:
Varies inversely with depth
Increases as depth increases
Decreases as depth increases
Remains the same as depth increases
Increases as depth increases
The ocean depth at which the partial pressure of oxygen in
air equals 1.6 bar is _____ meters assuming O2 = 21%.
70
85
66
55
66
Assuming a maximum partial pressure limitation of 1.4 bar,
the maximum MOD for a 40% nitrox mixture in the ocean is:
35 meters
25 meters
40 meters
20 meters
25 meters
, The absolute pressure at a depth of 50 meters in salt water
is:
5.012 bar
6.000 bar
5.000 bar
5.901 bar
6.000 bar
What would be the surface air consumption rate (SAC) of a
diver with a 200bar, 10 liter cylinder who uses 50bar in 10
minutes at a depth of 10 meters in the ocean?
25 liters / minute
50 liters / minute
35 liters / minute
10 liters / minute
25 liters / minute
If you have difficulty equalizing pressure in your
ears/sinuses while descending, you should:
Ascend 2 meters and force equalization
Stop and wait until the discomfort subsides
Ascend until the pressure is relieved and then attempt
equalization
Return to the surface and re-initiate the descent
Ascend until the pressure is relieved and then attempt
equalization
A lung rupture can occur with over-pressurization in water as
shallow as:
5.0m
1.2m
3.5m
4.0m
1.2m
The recommended method to avoid sinus squeezes and
reverse blocks is to:
