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The development of the demand regulator in 1943
2.One atmosphere of pressure is defined as:
All answers are correct
3.Absolute pressure is defined as:
The total pressure exerted on an object
4.The absolute pressure expressed in terms of bar at 10 meters in sea water is:
2 bar
5.Gauge pressure is defined as:
Absolute pressure minus 1 bar
6.Salt water weighs ___ kg per liter and freshwater weighs ___ kg per liter.
1.025/1.0
7.If a flexible air-filled container has a volume of 100 liter on the surface, what would the volume be at 20 meter in sea water? (rounded off)
33 liter
8.The absolute pressure expressed in terms of bar at 30 meters in salt water is:
4 bar
9.During normal diving activities, divers should never exceed an ascent rate of __ meters per minute.
9
10.Under the SSI Equipment Service Program, your Delivery System should be serviced and performance checked:
Every year
11.The most efficient breathing pattern for scuba diving is:
A deep balanced inhalation followed by a long balanced exhalation without any pause between inhaling and exhaling
12.The Delivery System components are:
A regulator, alternate air source, and a high pressure scuba cylinder
13.Which of the following Total Diving System subsystems best describes the SCUBA?
The Delivery System
14.Which of the following factors affect a diver’s air consumption rate?
All answers are correct
15.Assuming a consistent air consumption rate, diving at a pressure of 4 bar will use __ as much air as diving at 2 bar.
2 times
16.A scuba tank for recreational diving should be filled with:
Pure, filtered compressed air or Nitrox
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