PADI Deep Diving Techniques & Planning 3

Question 1

A diver notices their dive computer showing a flashing NDL warning at 80 feet. What is the correct action?

Accepted Answer

Begin a controlled ascent immediately to a shallower depth

Answer

When NDL is nearly exhausted, ascending to a shallower depth extends the NDL and reduces nitrogen absorption rate.

Question 2

What is the recommended minimum surface interval between repetitive deep dives?

Accepted Answer

At least 1 hour, or as directed by dive tables/computer

Answer

Surface intervals for repetitive diving should follow dive table or computer guidance, generally at least one hour, to allow adequate nitrogen off-gassing.

Question 3

Which gas law explains why air consumption increases dramatically during deep dives?

Accepted Answer

Boyle's Law

Answer

Boyle's Law states that gas volume is inversely proportional to pressure, meaning each breath consumes more gas molecules at depth than at the surface.

Question 4

During a deep dive, a buddy suddenly becomes unresponsive at 90 feet. What is the first priority?

Accepted Answer

Establish positive buoyancy and begin a controlled ascent

Answer

Establishing buoyancy and ascending with the unresponsive diver gets them to the surface where proper rescue breathing and emergency care can begin.

Question 5

What effect does cold water have on nitrogen narcosis during deep dives?

Accepted Answer

Cold water can worsen narcosis effects by reducing diver comfort and alertness

Answer

Cold water increases physiological stress and reduces alertness, which compounds the cognitive impairment effects of nitrogen narcosis.

(PADI) Certified Professional Association of Diving Instructors Diver Practice Test

(PADI) Certified Professional Association of Diving Instructors Diver Practice Test

PADI Deep Diving Techniques & Planning 3