1) Anoxia is due to Report

lack of oxygen

low air pressure on the body

release of nitrogen bubbles in the blood

2) The dilutor demand regulator functions Report

all the time

when the user breathes in

only when the supply valve is opened by the user

3) To measure moisture in an oxygen system use Report

a glass plate

litmus paper

a hygrometer using the dew point method

4) Oxygen cylinder test dates Report

are painted in white on the cylinder

are variable depending on discharge

may be stencilled on the neck of the cylinder

5) 0₂ system pressure has leaked away after charging. What is the most probable cause? Report

Supernumerator regular

Temperature compensator

Breathing regulator

6) If an O₂ system is leaking, where would you most likely find the cause?. Report

Thermal Relief Valve

Loose connection

Breathing mask

7) As the cabin altitude reaches 3042 metres Report

the 02 masks deploy automatically and the crew activates the system from the emergency panel

the 02 masks deploy automatically and hang half way extended

the 02 masks deploy automatically and the crew must activate the system from the cockpit

8) Oxygen cylinders are normally fitted with Report

oxygen purity gauge

temperature gauge

pressure and quantity gauges

9) A demand regulator in a portable oxygen bottle opens Report

when breathing

when 100% selected

all the time

10) Portable oxygen bottles are fitted with Report

a demand regulator

an overpressure indicator

an over temperature indicator

11) American made crew oxygen cylinders are Report

black in colour with a RH thread

green in colour with a LH thread

green in colour with a RH thread

12) Which connector has a left hand thread? Report

N₂

O₂

Freon

13) What is the principle of an O₂ generator? Report

Sodium chlorate and iron mixed by an electronic detonator

Sodium chloride and iron mixed by an electronic detonator

Sodium chlorate and iron using a mechanical detonator producing O₂ when mixed with air

14) What pressure are oxygen cylinders usually pressurised to? Report

300 PSI

1800 PSI

3000 PSI

15) Oxygen storage cylinders, once charged should be Report

turned on by crew

turned on and safety wire-locked

turned off

16) A thermal compensator is used in Report

a fuel system

an oxygen system

an hydraulic system

17) When charging an oxygen bottle with gaseous oxygen, the oxygen is Report

passed into the bottle at any rate as this does not affect temperature

passed into the bottle as quickly as possible to keep the temperature down

passed into the bottle slowly to keep the temperature at approximately ambient

18) Where are the left handed threads found in an oxygen system?. Report

Line valve

Shut-off valve

Charging connection

19) Portable O₂ diluter demand valve works when Report

the user breathes in

100% is selected

less than 500 psi is in bottle

20) A double headed oxygen pressure regulator is used for Report

additional flightcrew

changes in altitude

extra supply in case of emergency

EASA Questions Module%2011 Set%2021:%20oxygen

Set 1: Theory of flight

Set 2: Airframe Structures

Set 3: Aeroplanes-Fuselage

Set 4: Cabin Pressurisation

Set 5: Instruments

Set 6: Avionic system

Set 7: Avionic system

Set 8: Navigation

Set 9: Electrical Power

Set 10: Electrical System

Set 11: Battery

Set 12: Equip & Furnishing

Set 13: Fire Protection

Set 14: Fuel Systems

Set 15: Hydraulic Power

Set 16: Ice & Rain

Set 17: Flight Controls

Set 18: Flight Controls_1

Set 19: Landing Gear

Set 20: Lights

Set 21: Oxygen

Set 22: Pneumatic

Set 23: Water & Waste