PADI IDC Theory - Equipment
Test yourself with these questions
PADI IDC and IE Exam regulator questions often focus on either the first stage or the second stage
How it works
The job of the first stage is to bring the high cylinder pressure down to intermediate pressure, which is the pressure that’s in all of the hoses, apart from the high pressure hose that leads to your submersible pressure gauge.
This the part that you breathe from. It’s job is to bring the intermediate pressure down to ambient pressure.
PADI IDC Exam Questions - Regulators
When diving with a closed-circuit rebreather (CCR), you primarily use ______ to fine tune your buoyancy
An uncontrollable regulator freeflow could be caused by______
When diving in extremely cold temperatures, such as when ice diving, a key feature of your regulator should be______
Which part of a standard regulator reduces high pressure to intermediate pressure?
Scuba regulators are referred to as open-circuit_____ because they are activated by _______ and exhaust is vented into the water.
A DIN connection on a scuba cylinder allows the DIN regulator to be screwed directly into the cylinder valve, which has these advantages:
PADI IDC Revision - Equipment - Cylinders
Cylinders are different sizes and made of different materials. Steel or Aluminium. They need to be regularly tested according to local law.
This might help
These cylinders require you to wear less weight that aluminium ones because they displace less water and feel “heavier” in the water.
Steel cylinders that bear a + sign from the last test can be overfilled by 10 per. cent.
Of course aluminium cylinders require you to wear more weight when you’re diving than you would with a steel cylinder.
Local law requires cylinders to have a visual test and a hydrostatic test. Visual testing involves a technician removing the first stage and checking the walls for signs of damage. Hydrostatic testing involves immersing the cylinder and pressurising it with water. Providing measurements are within standards, the cylinder is then stamped and can be used for another period of time.
PADI IDC Exam Questions
Three reasons you should have visual inspection performed on a scuba cylinder are to:
A hydrostatic test involves_____ testing a cylinder. The important part of the testing procedure is ______
Which part of a cylinder relieves overpressure from an overheated or overfilled cylinder?
A burst disk in the cylinder valve is designed to rupture when the cylinder pressure rises above ____ percent of the cylinders rated pressure. The disk should be replaced______
A (+) sign after the date of the last hydrostatic test date on a(n)_____ cylinder means the cylinder can be filled to ____ above the listed pressure
Which of these marking indicates an aluminium cylinder?
Much more on Equipment
Of course, PADI IDC Exams have questions about so many more subjects than Regulators or Cylinders
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