PADI IDC OW-IE Exam Prep: Practice Questions for Future
Dive Instructors
1. Neutrally Buoyant Something underwater that does not float and does not
sink
2. Positively Buoyant Something that floats in water
, PADI IDC OW-IE Exam Prep: Practice Questions for Future
Dive Instructors
3. Negatively Buoyant Something underwater that sinks
4. Yoke Valve/Regulator Valve is more like a clamp. O-ring is on the tank valve
and
pressed by the regulator on tightening
5. Din Valve/Regulator Screwed into threaded valve. O-ring is on the regulator
and
encased deep inside the valve.
6. Balanced First Stage Larger orifice to allow air from the tank in.
It allows for greater air flow.
It makes it more capable of supplying air to
accessories. It makes it more capable of
supplying air to two divers.
7. Cylinder Pressure Has less influence on the operation of the valve since it
acts all
around the valve stem. Falling tank pressure has less
ettect on the amount of breathing ettort required to
open the valve
8. Piston First Stage External water pressure acts on a piston, which is the
main
moving part.
Has fewer moving parts - makes them faster & easier to
over- haul.
Easily accommodate designs with
Dive Instructors
1. Neutrally Buoyant Something underwater that does not float and does not
sink
2. Positively Buoyant Something that floats in water
, PADI IDC OW-IE Exam Prep: Practice Questions for Future
Dive Instructors
3. Negatively Buoyant Something underwater that sinks
4. Yoke Valve/Regulator Valve is more like a clamp. O-ring is on the tank valve
and
pressed by the regulator on tightening
5. Din Valve/Regulator Screwed into threaded valve. O-ring is on the regulator
and
encased deep inside the valve.
6. Balanced First Stage Larger orifice to allow air from the tank in.
It allows for greater air flow.
It makes it more capable of supplying air to
accessories. It makes it more capable of
supplying air to two divers.
7. Cylinder Pressure Has less influence on the operation of the valve since it
acts all
around the valve stem. Falling tank pressure has less
ettect on the amount of breathing ettort required to
open the valve
8. Piston First Stage External water pressure acts on a piston, which is the
main
moving part.
Has fewer moving parts - makes them faster & easier to
over- haul.
Easily accommodate designs with
