FIRE DETECTION AND PROTECTION – Air – DGCA Question Bank For Politics

#1. Without added oxygen the time of useful consciousness at 25,000 ft is approximately:

twenty seconds.

eighty seconds.

three minutes.

six minutes.

#2. With out added oxygen the time of useful consciousness at 40,000 ft is approximately:

twenty seconds.

three minutes.

eighty seconds.

six minutes.

#3. The maximum altitude without oxygen at which flying efficiency is not seriously impaired is:

10,000 ft.

17,500 ft

25,000 ft.

30,000 ft.

#4. In a pressure demand oxygen system:

each member of the crew has a regulator.

each member of the crew has a continuous oxygen supply.

oxygen is supplied with a continuous pressure flow.

oxygen demand will cause the pressure to rise.

#5. In a continuous flow oxygen system, oxygen is supplied:

only when the mask is plugged into the socket connection.

only on passenger inhalation through the mask.

only when the cabin altitude is above 18,000 ft.

only when the supply has been regulated by the pilot.

#6. In a diluter demand system, selection of emergency on this regulator will result in:

air mix supplied at emergency pressure.

100% oxygen supply as called for by the user.

100% oxygen at positive pressure.

100% oxygen continuous flow at positive pressure.

#7. If the aircraft suffers a decompression passenger oxygen masks:

are released by the passengers.

automatically drop to a half hung (ready position).

are handed out by the cabin staff.

must be removed from the life jacket storage.

#8. Oxygen cylinders are normally charged to:

1,000 psi.

1,200 psi.

1,800 psi.

2,000 psi.

#9. Rate of flow of oxygen is given in:

litres/minute.

pounds/minute.

litres/second.

kilos/hour.

#10. The colour of American oxygen cylinders is:

red

blue

green

brown

#11. The colour of British oxygen cylinders is:

white with black lettering.

grey with silver lettering.

black with white neck.

blue with white lettering.

#12. Dangerous pressure rise in oxygen cylinders:

is relieved by a thermostat.

is relieved by under pressurising the bottle.

is relieved by a bursting disc.

is controlled by a thermal relief valve.

#13. To leak test an oxygen system use:

fairy liquid and de-ionised water.

thin oil.

acid free soap and distilled water.

acid free soap and water.

#14. Lubrication of an oxygen component thread is by:

soap water.

grease.

oil

graphite.

#15. Satisfactory operation of the oxygen system is indicated by:

flow indicators.

lack of anoxia.

aural reassurance.

pressure indicators.

#16. If the pressurisation system fails and the cabin starts to climb, then at 14,000 ft oxygen will be available to the passengers by:

the stewardess who will hand out masks.

the passengers grabbing a mask from the overhead lockers.

portable oxygen bottles located in the seat backs.

masks automatically ejected to a ½ hung position.

#17. When air is pressurised the % of oxygen:

increases.

decreases.

remains the same.

nil.

#18. In an emergency chemically produced oxygen is supplied for a given period by:

sodium chlorate, iron power, an electrical firing system and a filter.

potassium chlorate, iron powder, an electrical firing system and a filter.

sodium chlorate, iron powder which is chemically activated by air and then filtered.

sodium chlorate and an electrical firing system.

#19. Passenger oxygen masks will present:

only when the cabin altitude reaches 14,000.

only if selected by the crew.

only if selected by the cabin staff:

if selected manually / electrically / barometrically.

#20. The charged pressure of a portable oxygen cylinder is normally:

500 psi.

1,200 psi.

1,800 psi.

3,000 psi.

#21. With the control knob set to high, a 120 litre portable bottle will provide oxygen for a period of:

60 mins.

30 mins.

12 mins.

3 mins.

#22. At what altitude will the diluter-demand oxygen regulator provide 100% pure oxygen:

10,000 ft.

14,000 ft.

24,000 ft.

34,000 ft.

#23. A Flow Indicator fitted to an Oxygen regulator indicates:

that exactly the correct amount of oxygen is being used by the crew member.

that oxygen is flowing through the regulator.

that the system pressure reducing valve is supplying the correct pressure to the regulator.

that the crew member is correctly connected to the regulator.

#24. what is the approximate time of useful conciousness when hypoxia develops at the specified altitudes. 18,000 ft 30,000 ft

2-3 min 10-15 sec

10 min 2 min

30 min 90-45 secs

40 min 5 min

#25. What is the effect on cabin temperature of a rapid de-compression at 30,000 ft:

sudden and extreme drop.

insignificant change over the first 2 minutes.

a gradual decrease to ambient over a period of about 10 minutes if the cabin heating ceases.

a gradual decrease to ambient temperature over a period of about 30 minutes if cabin heating continues.

#26. Susceptibility to hypoxia is increased by:

heat.

noise.

smoking.

under-breathing.

#27. 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:

26,000 ft.

30,000 ft.

34,000 ft.

38,000 ft.

#28. A flight deck indication that a fixed fire extinguisher has been fired is:

a green coloured bursting disc.

a protruding indicator pin at the discharge head.

low pressure warning lamp.

thermal discharge indicator.

#29. One type of extinguishing agent you would expect to find in an aircraft installed engine fire protection system is:

carbon dioxide.

argon.

helium.

freon.

#30. A wheel brake fire should be fought with a:

water/gas fire extinguisher.

dry powder extinguisher.

Carbon dioxide extinguisher.

foam fire extinguisher.

#31. An engine fire extinguisher has discharged due to an over temperature condition occurring in its vicinity. This will be indicated by:

a bursting disc in the discharge nozzle.

an externally mounted warning lamp.

an externally mounted discharge indicator showing red.

an audible warning.

#32. On a multi engined aircraft, an engine fire warning system consists of:

flashing red lights for each engine and a warning horn.

steady red light for each engine and a common warning bell.

flashing red light for each engine and a common warning bell.

steady red light and bell for each engine.

#33. Smoke detectors are fitted in:

passenger cabins, cargo bays, electrical equipment bays.

cargo bays, APU compartment, toilets.

toilets, electrical equipment bays, APU compartments.

cargo bays, electrical equipment bays, toilets.

#34. A short circuit in a resistive “fire wire” detector will:

fire the squib in the fire bottle discharge head.

cause a spurious fire warning to be received.

cause the blow out disc to be ruptured.

disable the test circuit.

#35. On receipt of an engine fire warning on the flight deck the correct procedure should be:

fight the fire with the flight deck BCF fire extinguisher.

pull the fire handle, fire the fire extinguisher, shut down the engine.

shut down the affected engine, pull the fire handle, fire the first extinguisher.

fire the first extinguisher, pull the fire handle, shut down the engine.

#36. Fire detection systems:

automatically fire the engine extinguishers.

can only use AC electricity.

are connected to the Vital bus bar.

can be tested from the flight deck.

#37. A toilet fire extinguisher is activated:

by high temperature in its vicinity.

by remote control from the flight deck.

by a switch at the nearest flight attendant station.

by a smoke detector.

#38. Emergency exits:

can only be opened from the inside.

must have an escape slide fitted to them.

are painted yellow.

must be outlined externally by a 2 inch band of contrasting colour.

#39. Regulations governing the fitting, marking and use of safety equipment is contained in:

British Civil Airworthiness Requirements.

Navigation Regulations.

Joint Airworthiness Requirements.

Operations Manual.

#40. An automatic escape slide:

can be armed from the inside of the aircraft only.

can only be activated from the flight deck.

automatically inflates when the crash switches are activated.

inflates when the recovery team open the door from the outside of the aircraft.

#41. Emergency lighting must be capable of remaining illuminated for a minimum of:

5 mins.

7 mins.

10 mins.

15 mins.

#42. The LED indicator light on the emergency torch is flashing at 4 second intervals. This indicates:

the battery is charging.

the torch is serviceable.

the battery needs replacing.

the filament is broken.

#43. Nomex gloves are provided on the flight deck to:

protect hands during cold weather refuelling operations.

remove hot meal containers from the oven.

protect hands from hot materials during firefighting.

to allow turn around checks to be carried out on a hot gas turbine engine.

#44. If the emergency lighting system is powered from the aircraft electrical system, it takes is power supply from:

AC essential bus-bar.

DC essential bus-bar.

Vital DC bus-bar.

The inverter.

#45. Lifejackets are inflated with compressed: