Results
Q1. Without added oxygen the time of useful consciousness at 30000 ft is approximately:
Correct answer is – one to two minutes
Q2. Without added oxygen the time of useful consciousness at 40000 ft is approximately:
Correct answer is – twenty seconds
Q3. The maximum altitude without oxygen at which flying efficiency is not seriously impaired is:
Correct answer is – 10000 ft
Q4. In a pressure demand oxygen system:
Correct answer is – each member of the crew has a regulator
Q5. In a continuous flow oxygen system, oxygen is supplied:
Correct answer is – only when the mask is plugged into the socket connection
Q6. In a diluter demand system, selection of emergency on this regulator will result in:
Correct answer is – 100% oxygen continuous flow at positive pressure
Q7. If the aircraft suffers a decompression passenger oxygen masks:
Correct answer is – automatically drop to a half-hung (ready position)
Q8. Oxygen cylinders are normally charged to:
Correct answer is – 1800 psi
Q9. Rate of flow of oxygen is given in:
Correct answer is – litres/minute
Q10. The colour of American and European oxygen cylinders is:
Correct answer is – green
Q11. Dangerous pressure rise in oxygen cylinders:
Correct answer is – is relieved by a bursting disc
Q12. To leak test an oxygen system use:
Correct answer is – acid free soap and distilled water
Q13. Lubrication of an oxygen component thread is by:
Correct answer is – graphite
Q14. Satisfactory operation of the oxygen system is indicated by:
Correct answer is – flow indicators
Q15. If the pressurization system fails and the cabin starts to climb, then at 14000 ft oxygen will be available to the passengers by:
Correct answer is – masks automatically ejected to a half-hung position
Q16. When air is pressurized the % of oxygen:
Correct answer is – remains the same
Q17. In an emergency chemically produced oxygen is supplied for a given period by:
Correct answer is – sodium chlorate, iron power, an electrical firing system and a filter
Q18. Passenger oxygen masks will present:
Correct answer is – if selected manually / electrically / barometrically
Q19. The charged pressure of a portable oxygen cylinder is normally:
Correct answer is – 1800 psi
Q20. With the control knob set to high, a 120 litre portable bottle will provide oxygen for a period of:
Correct answer is – 30 mins
Q21. At what altitude will the diluter-demand oxygen regulator provide 100% pure oxygen:
Correct answer is – 34000 ft
Q22. A flow indicator fitted to an oxygen regulator indicates:
Correct answer is – that oxygen is flowing through the regulator
Q23. What is the approximate time of useful consciousness when hypoxia develops at the specified altitudes? 20 000 ft 30000 ft
Correct answer is – 30 min 90-60 secs
Q24. What is the effect on cabin temperature of a rapid de-compression at 30000 ft?
Correct answer is – Sudden and extreme drop
Q25. Susceptibility to hypoxia is increased by:
Correct answer is – smoking
Q26. What is the approximate cabin altitude above which you must breath 100% oxygen if you are to maintain an alveolar partial pressure equal to that at sea level?
Correct answer is – 34000 ft
