Test 120 exam questions on Aircraft General Knowledge - Airframe, Systems, Powerplant for ATPL

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1 - A SAFE LIFE aircraft structural component: Has Parallel Load Paths. May be used during a declared number of cycles or flight hours. Should have enough strength during the whole lifetime of an aircraft. Is So Strong That It Never Will Fail During A Declared Time Period.

2 - The working principle of the anti-skid system is: Increase Of The Brake Pressure At The Faster Turning Wheels. Reduction of the brake pressure at the faster turning wheels. Increase of the brake pressure at the slower turning wheels. Reduction of the brake pressure at the slower turning wheels.

3 - The essential difference between aircraft AC alternators and DC generators (dynamos) is that the: Alternators Supply All Of The Output Current Through The Commutators And Brush Assemblies. Induced windings of the alternators are rotating (rotor), and the dynamos have a rotary inductor coil. The alternators generate much less power than DC generators. Induced (output) windings of the alternators are fixed (stator), and the dynamos have a fixed Inductor (field) coil.

4 - On detection of a persistent overvoltage fault on an AC generator connected to the aircraft AC busbars (paralleled bus system), the on-board protection device opens: The Exciter Breaker, The Generator Breaker And Tie Breaker. The exciter breaker and the generator breaker. The generator breaker. The Generator Breaker And Tie Breaker.

5 - When applying carburettor heating: The mixture becomes richer. No change occurs in the mixture ratio. The mixture becomes leaner. A Decrease In Rpm Results From The Lean Mixture.

6 - Automatic temperature control of the system as shown, would be accomplished by: The Cabin Sensors Only, Modulating The Mix Valve. The temperature selector only, modulating the mix valve. The temperature selector in conjunction with cabin sensors and the temperature regulator modulating the mix valve. Automatic Control Of The Ram Air.

7 - In a fuel system, the oil to fuel heat exchanger allows: Jet engine oil cooling through thermal exchange with fuel flowing from tanks. Temporary (on as needed basis) fuel heating by the engine oil to prevent icing in fuel filter. Fuel cooling so as to prevent vapour creation likely to unprime the nozzles. Fuel Heating As Required Whenever Fuel Filter Clogging Is Detected.

8 - A static inverter is powered by: Alternating Current And Produces An Alternating Current On Output. Direct current and produces a direct current on output. Direct current and produces an alternating current output. Alternating Current And Produces A Direct Current On Output.

9 - A twin-spool engine with a bypass mass flow of 250 kg/s and a HP compressor mass flow of 250 kg/s has a bypass ratio of: 2 0.5 1

10 - Which of the following statements, relating to the application of Ohm's Law, is the most correct? Current in a circuit is directly proportional to the applied electromotive force. Current in a circuit is inversely proportional to the electromotive force. Power in the circuit is inversely proportional to the square of the current. The Current In A Circuit Is Directly Proportional To The Resistance Of The Circuit.

11 - On the ground, the Auxiliary Power Unit (APU) can be substituted for the: Ground power unit, the starting system, the air conditioning unit. Ground power unit. Ground power unit, the starting system. Ground Power Unit, The Air Conditioning Unit.

12 - Batteries are rated in: Amperes/volts Watts Ampere hours Ohms

13 - When the oxygen system of a large aeroplane is used,: With the setting on "normal", the cockpit crew is supplied with a mixture of oxygen and cabin air . With the setting on "NORMAL", the passengers are supplied with a mixture of oxygen and cabin air. The same source of supply is used by the cockpit crew and cabin crew. The Same Source Of Supply Is Used By The Cockpit Crew And Passengers.

14 - Some aircraft use a fly-by-wire system to move the primary flight controls. This system is based on: Hydraulic Power Only. Electrical signals from a computer sent to hydraulic actuators. Secondary Controls Such As Speed Brakes. Mechanical Power Transmitted By Steel Wires.

15 - A tubeless tyre is a tyre 1. which requires solid or branched wheels 2. whose valve can be sheared in sudden accelerations 3. whose mounting rim must be flawless 4. which requires no rim protection between rim flange and tire removing device 5 . which does not burst in the event of a tire puncture 6. which eliminates internal friction between the tube and the tire The combination regrouping all the correct statements is: 1, 5, 6. 2, 3, 2006. 1, 2, 2005. 3, 4, 2005.

16 - The type of brake unit found on most transport aeroplanes is a: Single Disk Brake. Drum type brake. Belt brake. Multiple disk brake.

17 - An aeroplane whose maximum approved passenger seating configuration is 501 to 600 seats must be equipped with at least: 6 Hand Fire-extinguishers Conveniently Located In The Passenger Compartment. 7 hand fire-extinguishers conveniently located in the passenger compartment. 8 hand fire-extinguishers conveniently located in the passenger compartment. 5 Hand Fire-extinguishers Conveniently Located In The Passenger Compartment.

18 - When an 'open circuit' occurs in an electrical supply system, the: Fuse Or Cb Should Isolate The Circuit Due To Excess Current Drawn. Loss of continuity will prevent its working components from functioning. Load as indicated by the ammeter will increase. Component Will Operate Normally, But Will Not Switch Off.

19 - When a landing gear wheel is hydroplaning, its friction factor is equal to: 1 0.1 0.5

20 - 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 These Aeroplanes Often Consume Too Much Fuel On Short Haul Flights. The procedures and checklists for this kind of aeroplanes will take too much time In that case some fuel tanks remain empty during the whole flight, which stresses the aeroplane's structure in an unacceptable way The lifetime of the fatigue sensitive parts has been based on a determined load spectrum

21 - Electrical bonding of an aircraft is used to 1. protect the aircraft against lightning effects. 2. reset the electrostatic potential of the aircraft to a value approximating 0 volt 3. reduce radio interference on radio communication systems 4. set the aircraft to a single potentia The combination regrouping all the correct statements is: 1, 2, 2003 3, 4 1, 3, 4 2, 4

22 - On a modern aeroplane, to avoid the risk of tyre burst from overheating, due for example to prolonged braking during an aborted take-off, there is: A Pressure Relief Valve Situated In The Filler Valve. A hollow bolt screwed into the wheel which melts at a given temperature (thermal fuse) and deflates the tyre. Water injection triggered at a fixed temperature in order to lower tyre temperature. The 'emergency Burst' Function Of The Anti-skid System Which Adapts Braking To The Tyre Temperature.

23 - A propeller blade is twisted, so as to Decrease The Blade Tangential Velocity From The Blade Root To The Tip. Avoid the appearance of sonic phenomena. Allow a higher mechanical stress. Keep the local angle of attack constant along the blade.

24 - Regarding a jet engine: 1) The maximum thrust remains constant as the pressure altitude decreases. 2) The specific fuel consumption remains constant as the pressure altitude decreases at constant TAS. 1) Is Correct, 2) Is Correct. 1) is incorrect, 2) is correct. 1) is correct, 2) is incorrect. 1) is incorrect, 2) is incorrect.

25 - The ignition system generally used for small aircrafts is a: Battery Ignition System. Low tension system. High intensity system. High tension system.

26 - A turbocharger consists of a: Compressor And Turbine On Individual Shafts. Compressor driving a turbine via a reduction gear. Compressor and turbine mounted on a common shaft. Turbine Driving A Compressor Via A Reduction Gear.

27 - The colour of a fresh synthetic hydraulic fluids is: Blue. Pink. Red. Purple.

28 - A bus-bar is: A distribution point for electrical power. A device which may only be used in DC circuits. The stator of a moving coil instrument. A Device Permitting Operation Of Two Or More Switches Together.

29 - When a conductor cuts the flux of a magnetic field: There Will Be No Effect On The Conductor. An electromotive force (emf) is induced in the conductor. Current will flow in accordance with Fleming's left hand rule. The Field Will Collapse.

30 - The advantages of grounding the negative pole of the aircraft structure are 1. Weight saving 2. Easy fault detection 3. Increase of short-circuit risk 4. Reduction of short-circuit risk5. Circuits are not single-wired line The combination regrouping all the correct statements is: 1, 2, 2003 1, 2, 4 1, 3, 2005 2, 3, 2005

31 - The very rapid magnetic field changes (flux) around the primary coil in a magneto are accomplished by the: Distributor Arm Aligning With One Of The High Tension Segments. Contact breaker points opening. Rotor turning past the position of maximum flux in the armature. Contact Breaker Points Closing.

32 - The use of igniters is necessary on a turbo-jet 1 - throughout the operating range of the engine 2 - for ground starts 3 - for accelerations 4 - for in-flight relights 5 - during turbulence in flight 6 - in heavy precipitation or in icing conditions The combination which regroups all of the correct statements is: 2, 4, 5, 6 1, 2, 3, 6 2, 3, 2004 3 And 6 Only

33 - An engine fire in a large transport aircraft is indicated by a: Bell. Aural alert only. Visual warning and an aural alert. Visual Warning Only.

34 - In a compensated capacitance type quantity indicating system, the contents gauge of a half- full fuel tank indicates a fuel mass of 8000 lIf a temperature rise increased the volume of fuel by 5%, the indicated fuel weight would: Increase By 5% Decrease by 5% Remain the same Increase By 10%

35 - In a free turbine engine: Its Power Output Shaft May Be Connected To Either A Compressor Or Another Turbine. The air enters the compressor via the turbine inlet. There is no mechanical connection between the compressor and the power output shaft. The Compressor And Power Output Shaft Are Mechanically Connected.

36 - What is the load in the upper respectively lower girder of a spar of a cantilever wing during straight and level flight? Torsion In The Lower- And Upper Girder. Tension in lower- and upper girder. Compression in the upper girder and tension in the lower girder. Tension In The Upper Girder And Compression In The Lower Girder.

37 - The purpose of the primary stops in a flying control system is to: Prevent Damage To The System When The Helicopter Is Parked In High Winds. Act As A Stop In Case Of Vibration Of The Controls. Bring The Main And Tail Rotors To Rest As Soon As Possible After Shut-down. Restrict the movement of the controls within the correct range.

38 - A rectifier is a unit that: Transforms One Ac Voltage To A Greater/smaller Ac Voltage. Prevents rectified current from occurring in the electrical system. Protects the electrical system from over-voltages induced in the system itself. Produces a dc output from ac input.

39 - The hydraulic systems which works correctly is shown in the figure:

A B D C

40 - When the wing skin is not able to carry loads, the structural elements of the wing, which carry the bending moment, are: The spars. The webs. The rivets. The Ribs.

41 - In a pressurized aircraft whose cabin altitude is 8000', a crack in a cabin window makes it necessary to reduce the differential pressure to 5 psi.The flight level to be maintained in order to keep the same cabin altitude is:

Fl 230 FL 180 FL 280 Fl 340

42 - An aeroplane whose maximum approved passenger seating configuration is 61 to 200 seats must be equipped with at least: 2 Hand Fire-extinguishers Conveniently Located In The Passenger Compartment. 4 hand fire-extinguishers conveniently located in the passenger compartment. 3 hand fire-extinguishers conveniently located in the passenger compartment. 5 Hand Fire-extinguishers Conveniently Located In The Passenger Compartment.

43 - On starting, in a brushless AC generator with no commutator rings, the generator is activated by: A set of permanent magnets. The auxiliary winding. The stabilizer winding jointly with the voltage regulator. The Main Field Winding.

44 - During level flight at a constant cabin pressure altitude (which could be decreased, even at this flight level), the cabin outflow valves are: Fully Closed Until The Cabin Climbs To A Selected Altitude. Fully closed until the cabin descends to a selected altitude. At the pre-set position for take-off. Partially open.

45 - The primary purpose of the bleed valves fitted to axial flow compressors is to: Control The Acceleration Time Of The Engine. Spill compressor air should the engine overspeed thus controlling the speed. Reduce the likelihood of compressor stall. Enable An External Air Supply To Spin Up The Compressor For Engine Starting.

46 - Electrical bonding of an aircraft is used to 1. protect the aircraft against lightning effects. 2. reset the electrostatic potential of the aircraft to a value approximating 0 volt 3. reduce radio interference on radio communication systems 4. set the aircraft to a single potentia The combination regrouping all the correct statements is: 1, 2, 2003 3, 4 1, 3, 4 2, 4

47 - Fuel/air ratio is the ratio between the: Volume Of Fuel And Volume Of Air Entering The Carburettor. Mass of fuel and mass of air entering the cylinder. Mass of fuel and mass of air entering the carburettor Volume Of Fuel And Volume Of Air Entering The Cylinder.

48 - An aeroplane equipped with reversible flight controls: Need Not Be Equipped With A Separate Gust Lock System. Does not require an artificial feel system. Is Equipped With Simple Spring Type Feel Units. Does Not Have Mechanical Back-up.

49 - The correct statement about rain protection for cockpit windshields is that: Rain repellent should never be sprayed onto the windshield unless the rainfall is very heavy The alcohol de-icing system for cockpit windows is also suitable for rain protection The electric de-icing system for cockpit windows is also suitable for rain protection Wipers Are Sufficient Under Heavy Rain Conditions To Provide Adequate View Through The Cockpit Windows.

50 - A relay is: A Unit Which Is Used To Convert Electrical Energy Into Heat Energy. A device which is used to increase electrical power. A magnetically operated switch. Another Name For A Solenoid Valve.

51 - A primary stop is mounted on an elevator control system in order to: Restrict The Range Of Movement Of The Control Column. Restrict the range of movement of the elevator. Prevent Overloading Of Control Cables. Maintain Constant Control Cable Tension.

52 - Reference should be made to the fuel supply system shown in annex.In flight, with centre tank empty and APU operating, a fuel unbalance is detected (quantity in tank 1 < quantity in tank 2). Rebalancing of the two tanks is:

Impossible Without Causing The Apu To Stop. Possible with 'CROSSFEED' open and tank 1 pumps 'OFF' and tank 2 pumps 'ON'. Impossible because there is no fuel in centre tank. Possible With 'crossfeed' Open And Tank 2 Pumps 'off'.

53 - In order to produce an alternating voltage of 400 Hz, the number of pairs of poles required in an AC generator running at 6.000 RPM is: 8 4 24 12

54 - When an engine bay fixed fire extinguisher is activated, to what location is the extinguishant directed? The low pressure end of the outside of the engine compressor. The high pressure end of the engine turbine. Into the combustion chambers. The Engine Intake.

55 - The disadvantages of axial flow compressors compared to centrifugal flow compressors are 1 - expensive to manufacture 2 - limited airflow 3 - greater vulnerability to foreign object damage 4 - limited compression ratio The combination of correct answers is: 1 And 2 2 and 3 1 and 3 2 And 4

56 - The control of free turbine engines on turboprops, is accomplished by - a propeller control lever used to select: 1 - propeller RPM 2 - turbine temperature 3 - turbine RPM - a fuel control lever used to select: 4 - propeller RPM 5 - torque 6 - turbine temperature The combination which regroups all of the correct statements is: 1 - 5 - 6 2 - 4 - 5 3 - 4 - 6 1 - 3 - 5

57 - On a large transport aeroplane, the auto-slat system: Extends (part of) the slats automatically when a certain value of angle of attack is exceeded. Assist The Ailerons. Ensures That The (part Of) Slats Are Always Extended When The Ground/flight System Is In The "ground" Position. Provides For Automatic Slat Retraction After Take-off.

58 - The modern anti-skid processes are based on the use of a computer whose input data is 1. idle wheel speed (measured) 2. braked wheel speed (measured) 3. brake temperature (measured) 4. desired idle wheel train slipping rate 5. tire pressur The combination regrouping all the correct statements is: 1, 2, 4. 1, 3. 2, 4. 1, 2, 3, 4, 5.

59 - The 'slipstream effect' of a propeller is most prominent at: High Airspeeds With Low Power Setting. High airspeeds with high power setting. Low airspeeds with high power setting. Low Airspeeds With Low Power Setting.

60 - The pneumatic ice protection system is mainly used for: Pitot Tubes. Wings. Engine intakes. Propellers.

61 - The reason for fitting thermal plugs to aircraft wheels is that they: Prevent Heat Transfer From The Brake Disks To The Tyres. Prevent the brakes from overheating. Release air from the tyre in the event of overpressure. Release air from the tyre in the event of overheating.

62 - The pressurization of tanks is maintained by the fuel: Tank Drains. Top off unit. Vent system. Dump System.

63 - Given a conventional transport aeroplane with irreversible flight controls on the ground with engines running. Which of these statements about rudder trim actuation is correct? The "zero Force Point" Of The Artificial Feel System Changes, The Rudder Does Not Move. The Rudder Trim Tab Moves And The Rudder Pedals Do Not Move. The rudder moves, the rudder pedals move in the corresponding direction. The Rudder Moves, The Rudder Pedals Do Not Move.

64 - The so-called 'hot buses' or 'direct buses' are: Directly connected to the battery. Providing an alternative current. Automatically connected to the battery if generators have failed. Kept In Operating Conditions By An Electrical Resistance In The Case Of Energy Failure.

65 - According JAR CS / EASA CS the worst effect of a MINOR FAILURE on the aeroplane could be: Significant Reduction In Functional Capabilities Or Safety Margins. Large reduction in functional capabilities or safety margins. Slight reduction in functional capabilities or safety margins. No Effect On Operational Capabilities Or Safety.

66 - On a modern large pressurized transport aircraft, the maximum cabin differential pressure is approximately: 3 - 5 Psi 13 - 15 psi 7 - 9 psi 22 Psi

67 - Environmental system: in the air refrigeration unit, the water separation unit is placed: Before The Heat Exchangers. Before the cooling turbine. After the cooling turbine. Just After The Heat Exchangers.

68 - The expression "secondary flight control" applies to the: 1) trimmable stabilizer 2) rudder 3) speed brake 4) aileronThe combination that regroups all of the correct statements is: 1, 2, 3, 4 1, 3 2, 4 2, 3

69 - What is breathed in when using a passenger oxygen mask? 100% Oxygen. Cabin air and oxygen or 100% oxygen. A mixture of oxygen and freon gas. Cabin air and oxygen.

70 - Because of the input/output relationship of an AND gate, it is often referred to as the: All or nothing' gate. Inhibited' or 'negated' gate. State indicator' gate. Any Or All' Gate.

71 - Severe compressor stall can be indicated amongst others by: A Decrease In Tgt And A Change In Vibration Level. An increase in engine pressure ratio (EPR) and a decrease in TGT and fuel flow. A rise in TGT and an increase in fuel flow. A rise in turbine gas temperature (tgt) and a change in vibration level.

72 - The function of the selector valve is to: Select The System To Which The Hydraulic Pump Should Supply Pressure. Communicate system pressure to either side of an actuator. Discharge some hydraulic fluid if the system pressure is too high. Automatically Activate The Hydraulic System.

73 - The principle of FAIL SAFE design of an aircraft is based on the: Replacement Of Parts After A Given Number Of Cycles Or Hours Of Use. Redundancy of the structure or equipment. Capability to withstand a certain amount of weakening of the structure without catastrophic failure. Monitoring Of Critical Parameters And The Replacement Of Parts If A Limit Value Is Exceeded.

74 - Emergency extension of landing gear systems can be performed:1. with compressed C02.2. with compressed nitrogen.3. with compressed oxygen.4. by mechanical/manual means.5. by freefall.The combination that regroups all of the correct statements is: 2, 3, 2004. 1, 2, 2005. 1, 3, 2004. 2, 4, 5.

75 - A chip detector in the oil system of an engine/gearbox is to indicate that To Indicate That Seals Are Worn The piston rings are worn The oil temperature is too high There are metal particles in the oil

76 - The term 'pressure cabin' applies when an aeroplane: Is Only Pressurised In The Area Of The Control Cabin. Has the ability to maintain a constant cabin differential pressure at all flight altitudes. Has the means to maintain cabin pressure higher than ambient pressure. Has The Ability To Maintain A Constant Cabin Altitude At All Flight Altitudes.

77 - The advantage of mounting the tailplane on top of the vertical stabilizer (a "T-tail" configuration) is: To Have Greater Effectiveness At High Speed. To decrease fuel consumption by creating a tail heavy situation. That it does not require a de-icing system. To withdraw it from the influence of wing turbulence.

78 - In order to produce an alternating voltage of 400 Hz, the number of pair of poles required in an AC generator running at 6000 rpm is: 12 24 8 4

79 - Which of these statements about a gust lock system are correct or incorrect? 1) There should be suitable design precautions to prevent flight with the gust lock engaged. 2) Reversible flight controls should have a gust lock. 1) is correct, 2) is correct. 1) Is Correct, 2) Is Incorrect. 1) Is Incorrect, 2) Is Correct. 1) Is Incorrect, 2) Is Incorrect.

80 - The high Altitude Radio Altimeter uses the following wavelengths: Metric. Hectometric. Decimetric. Myriametric.

81 - An automatic toilet fire extinguisher is activated by: Co2 Odour detection Smoke detection Heat detection

82 - Because of the input/output relationship of an OR gate, it is often referred to as the: Inhibited' Or 'negated' Gate. State indicator' gate. Any or all' gate. All Or Nothing' Gate.

83 - Which of these statements regarding cockpit windows are correct or incorrect?I. On some aeroplanes the cockpit windows have an additional speed restriction, related to bird impact, when window heating is inoperative.II. Cockpit side windows are always provided with a de-icing system. I Is Correct, Ii Is Correct. I is correct, II is incorrect. I is incorrect, II is correct. I Is Incorrect, Ii Is Incorrect.

84 - An EGT (Exhaust Gas Temperature) indicator for a piston engine is used to: Assist the pilot to set the correct mixture. Control the fuel temperature. Control the cylinder head temperature. Control The Carburettor Inlet Air Flow.

85 - The built-in passenger oxygen system be activated by: Opening The Oxygen-bottle Valves. Switching the diluter demand regulator ON. Switching the diluter demand regulator and the passenger oxygen ON. Switching the passenger oxygen on.

86 - Among the different types of aircraft structures, the shell structures efficiently transmit the 1. normal bending stresses 2. tangent bending stresses 3. torsional moment 4. shear stresses The combination regrouping all the correct statements is: 1, 2, 3 1, 3, 2004 1, 2, 2004 2, 3, 2004

87 - The expression "primary flight control" applies to the: 1) elevator 2) speed brake 3) lift-augmentation devices 4) roll spoilersThe combination that regroups all of the correct statements is: 1, 4 2, 3 1, 2, 3, 4 2, 4

88 - The use of igniters is necessary on a turbo-jet 1 - throughout the operating range of the engine 2 - for ground starts 3 - for accelerations 4 - for in-flight relights 5 - during turbulence in flight 6 - in heavy precipitation or in icing condition The combination which regroups all of the correct statements is: 2, 4, 5, 6 1, 2, 3, 6 2, 3, 2004 3 And 6 Only

89 - A 'fan' stage of a ducted-fan turbine engine is driven by: The High Pressure Compressor Through Reduction Gearing. The low pressure turbine. Airflow drawn across it by the high pressure compressor. The High Pressure Turbine.

90 - The purpose of stringers, used in fuselage construction, is to: Withstand Shear Stresses. Assist the skin withstand longitudinal compressive loads. Carry the loads due to pressurisation and convert them into tensile stress. Provide Sound And Thermal Isolation.

91 - The heating facility for the windshield of an aircraft is: Used Only At Low Altitudes Where There Is A Risk Of Ice Formation. Used on a continual basis as it reduces the thermal gradients which adversely affect the useful life of the components. Only used when hot air demisting is insufficient. Harmful To The Integrity Of The Windows In The Event Of A Bird Strike.

92 - In general, in twin-engine aeroplanes with 'constant speed propeller' The oil pressure turns the propeller blades towards smaller pitch angle. The oil pressure turns the propeller blades towards higher pitch angle. The spring force turns the propeller blades towards smaller pitch angle. The Aerodynamic Force Turns The Propeller Blades Towards Higher Pitch Angle.

93 - When a persistent over-excitation fault is detected on only one AC generator, the protection device opens the: Tie Breaker. Exciter breaker, generator breaker and tie breaker. Exciter breaker and generator breaker. Generator Breaker And Tie Breaker.

94 - The cabin rate of descent: Is Always The Same As The Airplane's Rate Of Descent. Results in a cabin pressure increase. Is not possible at constant airplane altitudes. Results In A Cabin Pressure Decrease.

95 - Shimmy occurs on the nose wheel landing gear during taxiing when 1. the wheels tend to describe a sinusoidal motion on the ground 2. the wheels no longer respond to the pilot's actions This effect is overcome by means of: 3. the torque link 4. a damper associated with the steering cylinder The combination of correct statements is: 1, 4. 2, 3. 2, 4. 1, 3.

96 - When two DC generators are operating in parallel, control of load sharing is achieved by: An Equalising Circuit Which, In Turn, Controls The Speed Of The Generators. The synchronous busbar. Carrying out systematic load-shedding procedures. An equalising circuit which, in conjunction with the voltage regulators, varies the field excitation Current of the generators.

97 - In a bootstrap cooling system the supply air is first: Passed Across An Expansion Turbine, Then Compressed And Passed Through A Heat Exchanger. Compressed, then goes through a heat exchanger, and across an expansion turbine. Compressed, then passed across an expansion turbine and finally across a heat exchanger. Passed Across An Expansion Turbine, Then Directly To The Heat Exchanger.

98 - Which of these statements about structural design are correct and incorrect? 1) In structural design, FAIL SAFE implies the structure will never fail. 2) In structural design, SAFE LIFE implies the structure will never fail during a declared time period or number of cycles. 1) Is Correct, 2) Is Correct. 1) is correct, 2) is incorrect. 1) is incorrect, 2) is correct. 1) is incorrect, 2) is incorrect.

99 - Below its design speed an axial compressor: Has A Tendency To Surge In The Center Stages. Has no tendency to surge. Has a tendency to surge in the rear stages. Has a tendency to surge in the front stages.

100 - A SANDWICH structural part is: A So-called Integral Construction. Composed of two thin sheets and a light core material. Well suited for absorbing point concentrated loads. Composed Of Resin And Fibres.

101 - The capacity of a battery is the: Intensity Withstood By The Battery During Charging. Amount of ampere-hours that a fully charged battery can supply. No-load voltage of the battery multiplied by its rated output current. Number Of Cycles (charging And Discharging) That A Battery Can Withstand Without Deterioration Of Its Cells.

102 - What are the three elements of the fuselage structure of a large transport aeroplane? Skin, Ribs, Formers. Skin, girders, webs. Skin, frames, stringers. Skin, Spars, Ribs.

103 - The advantages of fly-by-wire control are 1. reduction of the electric and hydraulic power required to operate the control surfaces2. lesser sensitivity to lightning strike3. direct and indirect weight saving through simplification of systems4. immunity to different interfering signals5. improvement of piloting quality throughout the flight envelop The combination regrouping all the correct statements is: 1 And 2 1 and 5 3 and 5 3, 4 And 5

104 - An impulse coupling does not function at such speeds above those encountered in starting. Its engaging pawls are prevented from operating at higher speeds by Engine Oil Pressure A coil spring Centrifugal force Electro-magnetic Action Of Operating Magneto.

105 - The principle of ON CONDITION maintenance is based on the: Monitoring of critical parameters and the replacement of parts if a limit value is exceeded. Replacement of parts after a given number of cycles or hours of use. Capability to withstand a certain amount of weakening of the structure without catastrophic failure. Redundancy Of The Structure Or Equipment.

106 - When the combustion gases pass through a turbine the: Pressure Rises. Pressure drops. Temperature increases. Axial Velocity Decreases.

107 - When a bimetallic strip is used as a switch in a fire detection loop, a fire alarm is triggered after a delay. The purpose of this delay is to: Delay The Triggering Of The Fire Extinguishers And Increase Their Efficiency Allow temperatures to equalise Wait for the triggering of the second fire detection loop in order to confirm the fire Avoid false alarms in case of vibrations

108 - Which of these statements about a gust lock system are correct or incorrect? 1) There should be suitable design precautions to prevent flight with the gust lock engaged. 2) There is no need for a gust lock on reversible flight controls. 1) Is Correct, 2) Is Correct. 1) Is Incorrect, 2) Is Incorrect. 1) Is Incorrect, 2) Is Correct. 1) is correct, 2) is incorrect.

109 - The Ram Air Turbine (RAT) provides emergency hydraulic power for: Undercarriage Selection And Automatic Brake System. Flight controls in the event of loss of engine driven hydraulic power. Flap Extension Only. Nose Wheel Steering After The Aeroplane Has Landed.

110 - Connecting two 12 volt 40 ampere-hour capacity batteries in series will result in a total voltage and capacity respectively of: 12 Volts, 40 Ampere-hours. 24 volts, 80 ampere-hours. 24 volts, 40 ampere-hours. 12 Volts, 80 Ampere-hours.

111 - The resistors R1 and R2 are connected in parallel. The value of the equivalent resistance (Req) so obtained is given by the following formula: 1/req = 1/(r1 + R2) 1/Req = 1/R1 + 1/R2 Req = R1 x R2 Req = R1 + R2

112 - When air is compressed for pressurization purposes, the percentage oxygen content is: Unaffected. Dependent on the degree of pressurisation. Increased. Decreased.

113 - Hydraulic fluids must have the following characteristics 1. thermal stability 2. low emulsifying characteristics 3. corrosion resistant 4. good resistance to combustion 5. high compressibility 6. high volatility 7. high viscosityThe combination regrouping all the correct statements is: 2, 3, 4, 5 1, 2, 5, 7 1, 3, 4, 6 1, 2, 3, 4

114 - The conditions which can cause knocking are: High Manifold Pressure And High Revolutions Per Minute. High manifold pressure and low revolutions per minute. Low manifold pressure and high fuel flow. Low Manifold Pressure And High Revolutions Per Minute.

115 - The operating principle of float-type carburettors is based on the: Difference in air pressure at the venturi throat and the air inlet Measurement of the fuel flow into the induction system Increase in air velocity in the throat of a venturi causing an increase in air pressure Automatic Metering Of Air At The Venturi As The Aircraft Gains Altitude

116 - The logic symbol shown represents (assuming positive logic):

A Nor Gate. A NAND gate. An EXCLUSIVE gate. An invert or not gate.

117 - The oil system for a piston engine incorporates an oil cooler that is fitted: Between The Oil Tank And The Pressure Pump After the pressure pump but before the oil passes through the engine In the return line to the oil tank after the oil has passed through the scavenge pump After The Oil Has Passed Through The Engine And Before It Enters The Sump

118 - The services connected to a supply bus-bar are normally in: Parallel, So That Isolation Of Loads Decreases The Bus-bar Voltage. Series, so that isolating one load increases the bus-bar current consumption. Series, so that isolation of loads increases the bus-bar voltage. Parallel, so that isolating individual loads decreases the bus-bar current consumption.

119 - Engine compartment decking and firewalls are manufactured from: Stainless steel or titanium sheet. Asbestos blankets. Composite materials such as carbon, kevlar and fibre glass. Aluminium Alloy Sheet.

120 - Windshield heating of a transport aeroplane is Not Affecting The Strength Of A Cockpit Windows. Only used when hot-air demisting is insufficient. Essential to improve the strength of the cockpit windows. Used Only At Low Altitudes Where There Is A Risk Of Ice Formation.

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