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Exam simulation Aircraft General Knowledge - Airframe, Systems, Powerplant ATPL - Airline Transport Pilot license

Exam simulation ATPL Aircraft General Knowledge - Airframe, Systems, Powerplant 120 questions on 120 minutes

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1 - The accessory units driven by the accessory gearbox of a turbo-jet engine are the 1. tacho-generator N1 2. tacho-generator N2 3. thrust reverser pneumatic motors 4. AC generator and its Constant Speed Unit (CSD) 5. oil pumps 6. hydraulic pumps 7. high pressure fuel pumps. The combination regrouping all the correct statements is:
2 - The purpose of the baffles in an aircraft's integral fuel tank is to:
3 - In an aircraft hydraulic system, a hydraulic fuse is used primarily:
4 - The purpose of the contact breaker is to:
5 - Which of these statements about a gust lock system are correct or incorrect? 1) Irreversible flight controls should have a gust lock. 2) There is no need for a gust lock on manual flight controls.
6 - A static inverter is powered by:
7 - The richness of a fuel/air mixture ratio is the:
8 - The capacity of a battery is the:
9 - The fuel supply system on a jet engine includes a fuel heating device, upstream of the main fuel filter so as to:
10 - A propeller blade is twisted, so as to
11 - The frequency which corresponds to a wavelength of 12 cm is:
12 - The types of fuel tanks used on transport aircraft are:
13 - Why is the artificial feel required on some flight control systems and how is the degree of the feel set?
14 - The passenger oxygen mask will supply:
15 - An asymmetric loading (p-factor) on the propeller exists ..
16 - A scissor is a component found on landing gears. Its function is to:
17 - On an aeroplane utilising AC as primary power supplies, the batteries are charged in flight from:
18 - Consider the flight deck oxygen supply system. The purpose of the oxygen regulator (as a function of demand and altitude) is to: 1. decrease oxygen pressure from 1800 PSI (in the bottles) down to about 50-75 PSI (low pressure system) 2. supply pure oxygen 3. supply diluted oxygen 4. supply oxygen at normal pressure 5. supply oxygen at emergency/positive pressure 6. trigger the continuous cabin altitude warning at 10000 ft cabin altitude. The combination regrouping all the correct statements is:
19 - On a large pressurised transport aeroplane, the maximum cabin differential pressure is approximately:
20 - Fuel/air ratio is the ratio between the:
21 - Primary flight controls are:
22 - In a fire detection system with single-loop continuous components (with no fault protection), if the line is accidentally grounded:
23 - The purpose of the proximity of the emergency evacuation path marking system is to:
24 - The wing ice protection system currently used for most large turboprop transport aeroplanes is a:
25 - The principle of FAIL SAFE design of an aircraft is based on the:
26 - What is the name of the control surface that rotates an aeroplane about its longitudinal axis?
27 - For piston engines, mixture ratio is the ratio between the:
28 - Concerning the sequential pneumatic impulses used in certain leading edge de-icing devices, one can affirm that 1 - They prevent ice formation. 2 - They are triggered from the flight deck after icing has become visible. 3 - A cycle lasts more than ten seconds. 4 - There are more than ten cycles per second. The combination which regroups all the correct statements is:
29 - Fire precautions to be observed before refuelling are:
30 - In general, in twin-engine aeroplanes with 'constant speed propeller'
31 - On a transport type aircraft the fuel tank system is vented through:
32 - The use of a hot air wing anti-icing system:
33 - A static converter is powered by:
34 - The function of the selector valve is to:
35 - According EASA CS-25 the worst effect of a MAJOR FAILURE on the flight crew could be:
36 - Significant torsion effects in a wing during flight can be caused by:
37 - On starting, in a brushless AC generator with no commutator rings, the generator is activated by:
38 - When the AC generators are connected in parallel, the reactive loads are balanced by means of the:
39 - The purpose of a trim tab (device) is to:
40 - When a conductor cuts the flux of a magnetic field:
41 - If one of the 12 cells of a Lead-acid battery has a broken connection rendering it inoperable, the battery:
42 - The Ram Air Turbine (RAT) provides emergency hydraulic power for:
43 - The inner layer of a heated windscreen is made of:
44 - Which of the following qualitative statements about a fixed propeller optimized for cruise condition, is true for the take-off case? The angle of attack of the propeller:
45 - The octane rating of a fuel and compression ratio of a piston engine have which of the following relations?
46 - 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:
47 - When the pilot moves the mixture lever of a piston engine towards a lean position the:
48 - Which of these statements about trimming in an irreversible flight control system of a conventional aeroplane are correct or incorrect? 1) The zero force position of the control column does not change when using the elevator trim. 2) The zero force position of the control wheel does not change when using the aileron trim.
49 - Windshield heating of a transport aeroplane is:
50 - The voltage of a fully charged lead-acid battery cell is:
51 - For a subsonic airflow, in a divergent duct the:
52 - A 3 phase AC generator has 3 separate stator windings spaced at:
53 - Connecting two 12 volt 40 ampere-hour capacity batteries in series will result in a total voltage and capacity respectively of:
54 - Which of the following statements, relating to the application of Ohm's Law, is the most correct?
55 - The relationship between compression ratio of a piston engine and the required fuel octane rating is that the:
56 - 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. registersThe combination which regroups all the correct statements is:
57 - The advantages of fly-by-wire control are: 1) Reduction of the electric and hydraulic power required to operate the control surfaces. 2) Lesser sensitivity to lightning strike. 3) Direct and indirect weight saving through simplification of systems. 4) Immunity to different interfering signals. 5) Improvement of piloting quality throughout the flight envelope. The combination regrouping all the correct statements is:
58 - The expression "secondary flight control" applies to the: 1) elevator 2) speed brake 3) lift-augmentation devices 4) roll spoilers. The combination that regroups all of the correct statements is:
59 - Circuit breakers protecting circuits may be:
60 - Main cabin temperature is:
61 - 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:
62 - Which of these statements about a gust lock system are correct or incorrect? 1) There is no need for a gust lock on irreversible flight controls. 2) Manual flight controls should have a gust lock.
63 - Max. Exhaust Gas Temperature is theoretically associated with:
64 - The reason for a double switch on the elevator trim is:
65 - Approved clean-agent fire extinguishers used on aircraft are effective mainly because they:
66 - In a vapour cycle cooling system what is the purpose of the condenser?
67 - Aircraft is descending in straight flight with the spoilers deployed. If a pilot initiates a descending turn to the left the:
68 - One of the purposes of compressor bleed valves is to:
69 - Compressor surge during gas turbine engine acceleration is prevented by:
70 - A semi-monocoque aircraft fuselage structure usually consists of:
71 - A test to assess the state of charge of a lead-acid battery would involve:
72 - 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:
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73 - Alternating current can be derived from direct current by:
74 - The Low Altitude Radio Altimeter uses the following wavelengths:
75 - When a battery is almost fully discharged there is a tendency for the:
76 - Immediately after starting engine(s) with no other electrical services switched on, an ammeter is showing a high charge rate to the battery:
77 - The use of too low an octane fuel may cause:
78 - The function of a constant speed drive (CSD) is to ensure:
79 - VLE is the maximum:
80 - The function of ribs in a wing is to:
81 - 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 viscosity. The combination regrouping all the correct statements is:
82 - What is the load in the upper respectively lower girder of a spar of a cantilever wing during straight and level flight?
83 - Dual ignition provides a factor of reliability and:
84 - The principle of aeroplane propulsion is to generate a propelling force by:
85 - About a twin spool compressor:
86 - Landing gear torque links are used to:
87 - Which is the correct statement regarding a large aircraft fitted with both inboard and outboard ailerons?
88 - The bimetal strip detectors of an engine fire detection system: 1 -Are arranged in series. 2 -are arranged in parallel. 3 -open during a fire. 4 -close during a fire. The combination containing all of the correct statements is:
89 - Which of these statements about structural design principles are correct or incorrect? 1) The DAMAGE TOLERANCE principle assumes cracks in the structure will never occur. 2) The SAFE LIFE principle is based on the replacement of parts after a given number of cycles or flight hours.
90 - In flight, if the Constant Speed Drive (CSD) temperature indicator is in the red arc the:
91 - The fan of a turbo-fan engine is driven by:
92 - Regarding Ohm's law:
93 - If the pressure in the cabin tends to become lower than the outside ambient air pressure the:
94 - In a compressor stage of a jet engine, the sequence is:
95 - The reason for the trim switch on a control column to consist of two separate switches is
96 - The moving part in an AC generator is usually referred to as the:
97 - In a bootstrap cooling system the supply air is first:
98 - A turbofan engine with an inlet air mass flow of 1000 kg/s and a bypass mass flow of 889 kg/s has a bypass ratio of:
99 - Vibration sensors are used in a gas turbine engine to indicate:
100 - A SANDWICH structural part is unsuitable for absorbing:
101 - Most large conventional aeroplanes are not provided with aileron and rudder trim tabs. Is it still possible to trim these control surfaces?
102 - When a wing bends upwards, aileron flutter might occur if the aileron deflects:
103 - What is (are) the damping element(s) in a landing gear shock absorber used on larger aircraft?
104 - Consider a jet engine whose control is based on the Engine Pressure Ratio (EPR): 1. With a constant EPR, the thrust decreases when the altitude increases; 2. With a constant EPR, the thrust is independent of the Mach number; 3. At same environmental conditions, a given EPR setting maintains the thrust irrespective of engine wear due to ageing; 4. The EPR is determined by the impact pressure difference between the turbine outlet and the compressor inlet; 5. On take-off, in the event of icing not detected by the crew, the indicated EPR is lower than the real EPR. The combination regrouping all the correct statements is:
105 - During a power change on an engine equipped with a constant speed propeller, a wrong combination of manifold pressure and RPM values results in excessive pressures in the cylinders. This is the case when one simultaneously selects a ...
106 - An aeroplane whose maximum approved passenger seating configuration is greater than 600 seats must be equipped with at least:
107 - The purpose of the primary stops in a flying control system is to:
108 - The purpose of a compressor bleed valve is to prevent surging:
109 - The purpose of a voltage regulator is to control the output voltage of the:
110 - Purposes of an accumulator in an hydraulic system are: 1. to damp pressure fluctuations. 2. to cool the hydraulic fluid. 3. to serve as a limited alternate source of pressure. 4. to serve as a main pressure source for normal operation. The combination that regroups all of the correct statements is:
111 - The purpose of static wick dischargers is to:
112 - For a turbine engine, the self-sustaining speed relates to the minimum RPM at which the engine:
113 - The elevators of a conventional airplane are used to provide rotation about the:
114 - Environmental system: in the air refrigeration unit, the water separation unit is placed:
115 - Trimming of aileron and rudder in an irreversible flight control system:
116 - On many small piston-engine aeroplanes fitted with constant-speed propellers, blade pitch is changed:
117 - On an aeroplane, spoilers are:
118 - Severe compressor stall can be indicated amongst others by:
119 - The part of a piston engine that transforms reciprocating movement into rotary motion is termed the:
120 - 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?
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