TECHGEN-BNC-MODULE10

TECHGEN-BNC-MODULE10

1. The ABS (Auto Brake System) is being disconnected after landing ..

a) by pilot action
b) automatically
c) at a certain low speed
d) the system is always armed

2. A pressure relief valve that does not fit on its seat properly would result in

a) low oil temperature.
b) low oil pressure
c) high oil pressure
d) excessive oil consumption

3. Chemical oxygen generators are used to furnish oxygen to the:

a) cockpit only.
b) cabin only.
c) cockpit and the cabin.
d) toilets only.

4. Modern pressurized transport airplanes are equipped with:

a) two independent oxygen systems, one supplying the cockpit, the other the cabin.
b) only portable oxygen bottles.
c) only one oxygen system supplying the whole aircraft.
d) two oxygen systems both supplying the cockpit and the cabin.

5. The crash/fire axe is part of the safety equipment fitted to passenger aircraft. Its function is to:

a) settle an escalating conflict with unreasonable passengers, who threaten flight safety.
b) activate a radio survival beacon by cutting off the red coloured top
c) obtain forced access to a fire behind a panel and a general purpose tool during evacuation.
d) free exits in case of evacuation via the sides.

6. On an aircraft provided with resistance and capacitance variation type fire detection loops, a fire alarm is initiated by a temperature increase detected:

a) on at least one loop
b) at any isolated point of the loops or else generally on all the loops
c) only in a uniform way along the loops
d) only at an isolated point of the loops

7. If the pressure in the cabin tends to become lower than the outside ambient air pressure the:

a) negative pressure relief valve will close
b) negative pressure relief valve will open.
c) outflow valve open completely.
d) air cycle machine will stop.

8. The part of the flight that will cause the highest loads on the torsion link in a bogie gear is

a) Taxiing with a small turning radius.
b) Gear down selection
c) Braking with an inoperative anti skid system.
d) Touch down with crosswind

9. Cooling air for a reciprocating engine can be obtained by means of:

a) a turbocharger
b) a pneumatic system.
c) ram air
d) a supercharger

10. A pressurized aeroplane is operated at FL 300. It undergoes a rapid decompression so that the pressure in the cabin goes quickly down to the outside pressure value. What happens concerning the oxygen system ?

a) the oxygen masks are automatically presented to cabin crew members and passengers
b) if the automatic mask presentation has been activated, the oxygen will flow within the first 3 minutes
c) the oxygen masks are automatically presented to flight crew members
d) manual override of the automatic presentation of passenger oxygen masks is, generally speaking, not possible

11. In an on-board computer, the software is

a) resident in a read-only memory (REPROM, EEPROM,...)
b) loaded from a hard disk
c) loaded from a floppy disk
d) resident in a random access memory (RAM)

12. A magnetic plug can be used to

a) prevent metallic particles from entering the oil system
b) collect ferrous particles reaching the sump
c) collect static electricity.
d) collect carbon found in the oil

13. The type of a aircraft oxygen system intended for use by passengers, is mostly:

a) portable equipment only
b) an air recycle system
c) a continuous flow system
d) a pressure demand system

14. A chip detector in the oil system of an engine/gearbox is to indicate that

a) the piston rings are worn
b) there are metal particles in the oil
c) the oil temperature is too high
d) to indicate that seals are worn

15. The advantages of a gaseous oxygen source for the passenger cabin are: 1. a greater autonomy, 2. no risk of explosion, 3. reversible functioning, 4. easy storage and maintenance, 5. possibility to regulate flow. The combination regrouping all the correct statements is:

a) 2, 4, 5
b) 1, 2, 3, 4, 5
c) 1, 3, 5
d) 2, 3, 4

16. The disadvantages of a chemical oxygen source for the passenger cabin are: 1. a flow which cannot be modulated, 2. a heavy and bulky system, 3. non reversible functioning, 4. risks of explosion, 5. poor autonomy. The combination regrouping all the correct statements is:

a) 2, 4
b) 1, 3, 5
c) 1, 2, 3, 4, 5
d) 1, 2, 3, 5

17. Vents in oil tanks are primarily to

a) allow for expansion of hot oil
b) prevent excessive pressure from building up in tank
c) prevent overthrow
d) eliminate foaming.

18. The function of a feed box in the fuel tank is to

a) ventilate the tank during refuelling under high pressure
b) distribute the fuel to the various tanks during refuelling
c) increase the fuel level at the boost pump location
d) trap fuel sediments or sludge in the lower part of the tank

19. The advantages of a chemical oxygen source for the passenger cabin are: 1. reduced weight and volume, 2. easy storage and maintenance, 3. greater autonomy, 4. no risk of explosion, 5. reversible functioning, 6. no maintenance. The combination regrouping all the correct statements is:

a) 2, 3, 5
b) 1, 3, 4, 5
c) 1, 2, 3, 4, 5, 6
d) 1, 2, 4, 6

20. The function of an air cycle machine is to:

a) remove the water from the bleed air.
b) pump the conditioned air into the cabin.
c) decrease the pressure of the bleed air.
d) cool the bleed air.

21. The purpose of the "Pressure Relief Valve" in a high pressure oxygen system is to:

a) act as a manual shut-off valve
b) reduce pressure in the oxygen reservoir to a suitable manifold pressure for the regulator
c) maximize the charging pressure of the system
d) relieve overpressure if the pressure reducing valve malfunctions

22. Generally speaking when the oxygen flows to the masks in the passenger cabin, the system is activated by

a) firmly pulling the mask towards the face, after the cover has opened.
b) pushing the mask against the face and breath normally.
c) firmly pulling the cover behind which the oxygen mask is stowed.
d) operating the relevant switch in the cockpit.

23. The advantages of thermal anti-icing are: 1. Simple and reliable system 2. Profiles maintained 3. Greater efficiency than that of an electrical resistor 4. Direct use of the hot air from the jet engine without substantial reduction in engine thrust The combination of correct statements is:

a) 3,4
b) 1,2
c) 2,4
d) 1,3

24. The difference between (1) a fuse and (2) a circuit breaker is:

a) (1) suitable for high currents, (2) not suitable for high currents.
b) (1)not resettable, (2) not resettable.
c) (1) not suitable for high currents, (2) suitable for high currents.
d) (1)not resettable, (2)resettable.

25. On-board electrical systems are protected against faults of the following type: 1. AC generator over-voltage 2. AC generator under-voltage 3. over-current 4. over-speed 5. under-frequency 6. undue vibration of AC generators The combination of correct statements is:

a) 1,2,4,5
b) 1,3,5,6
c) 2,3,4,5,6
d) 1,2,4,6

26. The chemical oxygen generator supplies oxygen for about:

a) 5 minutes.
b) 30 minutes.
c) 15 minutes.
d) 2 hours.

27. A manual inflation handle:

a) operates a hand pump for manual inflation of a slide
b) serves to inflate a life jacket when the normal inflation function fails
c) serves to actuate inflation of a slide when automatic inflation fails
d) is generally not applied on slides.

28. Generally, when the fire handle of the fire-extinguishing system on an aircraft is pulled, the effects are: 1. closing of the LP valve of the fuel system 2. opening of the air bleed valves and HP valves on the engine concerned 3. setting of extinguishing systems 4. closing of the isolation and de-icing valves 5. isolation of the associated electric current generators 6. immediate discharge of extinguishing agent The combination regrouping all the correct statements is:

a) 1,2,5,6
b) 1,3,4
c) 1,3,4,5
d) 2,3,4,5

29. The demand valve of a diluter-demand type oxygen regulator in normal mode, operates when the:

a) user requires 100 percent oxygen
b) pressure in the oxygen reservoir is more than 500 psi
c) user breathes in
d) diluter control is in normal position

30. In the cabin, when the oxygen mask is pulled downwards, the passenger breathes:

a) pure oxygen under pressure.
b) pure oxygen at the ambient pressure.
c) a mixture of oxygen and cabin air.
d) cabin air under pressure.

31. In the cockpit of a transport airplane, at least one manual fire-extinguisher must be conveniently located containing:

a) powder.
b) special fluids.
c) water.
d) halon.

32. A substance which may never be used in the vicinity or on parts of an oxygen installation is:

a) Water
b) Halon
c) Nitrogen
d) Grease

33. Hydraulic oil, entering the hydraulic pump, is slightly pressurised to:

a) ensure sufficient pump output
b) prevent cavitation in the pump
c) prevent vapour locking.
d) prevent overheating of the pump.

34. The Central Processing Unit (CPU) of a computer essentially consists of: 1. an Arithmetic and Logic Unit (ALU) 2. a control and timing unit 3. registers The combination which regroups all the correct statements is:

a) 1,2
b) 2,3
c) 1,3
d) 1,2,3

35. The purpose of the proximity of the emergency evacuation path marking system is to:

a) replace the overhead emergency lighting in case of failure.
b) give additional guidance during an emergency evacuation with a thick smoke.
c) guide the emergency evacuation during night only.
d) mark only the thresholds exits.

36. The reason for the fact that an aeroplane designed for long distances cannot simply be used for short haul flights at higher frequencies is that

a) the procedures and checklists for this kind of aeroplanes will take too much time
b) these aeroplanes often consume too much fuel on short haul flights.
c) in that case some fuel tanks remain empty during the whole flight, which stresses the aeroplane's structure in an unacceptable way
d) the lifetime of the fatigue sensitive parts has been based on a determined load spectrum

37. Oxygen systems are systems used on pressurized airplanes in: 1. an emergency in the case of depressurization. 2. an emergency in the case of the indisposition of a passenger. 3. normal use in order to supply oxygen to the cabin. 4. an emergency in the case of smoke or toxic gases. The combination regrouping all the correct statements is:

a) 3
b) 2, 3
c) 1,4
d) 1, 2, 4

38. The function of a fusible plug is to

a) function as a special circuit breaker in the electric system
b) protect the brake against brake disk fusion due to excessive temperature.
c) protect against excessive pressure in the pneumatic system.
d) protect the tyre against explosion due to excessive temperature.

39. A unit that converts electrical DC into AC is:

a) an AC generator.
b) an inverter.
c) a thermistor.
d) a transformer rectifier unit.

40. Smoke detectors fitted on transport aircraft are of the following type:

a) chemical
b) optical or ionization
c) magnetic
d) electrical

41. The lubricating system of an aircraft engine is used to

a) operate ground adjustable propellers.
b) prevent inter-crystalline corrosion
c) keep the engine warm
d) aid in dissipation of heat

42. Assume that during cruise flight with air-conditioning packs ON, the outflow valve(s) would close. The result would be that:

a) the air supply would automatically be stopped
b) the cabin pressure would become equal to the ambient outside air pressure
c) the pressure differential would go to the maximum value
d) the skin of the cabin would be overstressed

43. Load shedding means ..

a) Reduction of air loads on the flaps by means of the flap load relief value
b) A procedure used in control systems to reduce the stick forces
c) To leave behind extra cargo if the centre of gravity moves outside limits
d) Temporary or permanent switching off of certain electric users to avoid overload of electric generators

44. The purposes of the oil and the nitrogen in an oleo-pneumatic strut are:

a) the oil supplies the damping function and the nitrogen supplies the spring function
b) the oil supplies the spring function and the nitrogen supplies the damping function.
c) the oil supplies the sealing and lubrication function, the nitrogen supplies the damping function.
d) the oil supplies the damping and lubrication function, the nitrogen supplies the heat-dissipation function.

45. A Constant Speed Drive aims at ensuring

a) that the CSD remains at a constant RPM not withstanding the generator RPM
b) equal AC voltage from all generators.
c) that the starter-motor maintains a constant RPM not withstanding the acceleration of the engine.
d) that the electric generator produces a constant frequency.

46. When selected to normal, the oxygen proportion of the air/oxygen mixture supplied by the cockpit oxygen system regulator:

a) is 100 %.
b) is constant whatever the altitude.
c) decreases when the altitude increases.
d) increases when the altitude increases.

47. A Continuous-Loop-Detector-System is a:

a) Fire detection system
b) Fire fighting system
c) Smoke detection system
d) Carbon dioxide warning system

48. When the door operation of a transport airplane equipped with evacuation slides in the armed position is opened from the outside, the slide:

a) becomes inflated in its container thus preventing its unfolding.
b) unfolds and becomes inflated.
c) unfolds but does not become inflated.
d) is disarmed automatically.

49. The reason for the trim switch on a control column to consist of two separate switches is

a) To prevent that both pilots perform opposite trim inputs.
b) To reduce the probability of a trim-runaway
c) To be able to use two different trim speeds, slow trim rate at high speed and high trim rate at low speed
d) Because there are two trim motors.

50. Oil consumption is mainly due to

a) engine temperature
b) type of oil used
c) piston ring arrangement
d) engine speed

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