PADI Scuba Equipment Assembly & Function 2

Question 1

When attaching a BCD to a scuba cylinder, what is the correct position of the tank valve relative to the BCD backpack?

Accepted Answer

Valve facing the diver's back with the opening up

Answer

The tank valve should face the diver's back with the opening pointing upward so the regulator first stage can be attached correctly.

Question 2

What is the purpose of the purge button on a second stage regulator?

Accepted Answer

To manually release air to clear the mouthpiece

Answer

Pressing the purge button manually opens the valve to flush air through the mouthpiece, clearing water or debris.

Question 3

Which type of BCD inflator mechanism uses the diver's breath to add air to the bladder?

Accepted Answer

Oral inflator

Answer

The oral inflator allows divers to blow air into the BCD bladder by breathing into the inflator mouthpiece.

Question 4

A diver notices the submersible pressure gauge reads full even after several minutes of breathing. What is the most likely cause?

Accepted Answer

The SPG hose is kinked or the gauge is faulty

Answer

A gauge that doesn't move despite active breathing likely has a blocked hose or a defective pressure gauge that should not be used.

Question 5

What does it mean when a regulator is described as 'environmentally sealed'?

Accepted Answer

Internal parts are protected from freezing water or contaminants

Answer

An environmentally sealed first stage uses a dry chamber or special diaphragm to prevent water from contacting internal parts, reducing freeze-up risk.

PADI - Professional Association of Diving Instructors Practice Test

PADI - Professional Association of Diving Instructors Practice Test

PADI Scuba Equipment Assembly & Function 2