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Exam simulation Aircraft General Knowledge - Instrumentation - ATPL - Airline Transport Pilot license

Exam simulation ATPL Aircraft General Knowledge - Instrumentation 120 questions on 120 minutes

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1 - Due to its conception, the altimeter measures a:
2 - The apparent wander of a directional gyro is 15°/h:
3 - The radio altimeter is required to indicate zero height AGL as the main wheels touch down on the runway. For this reason, it is necessary to:
4 - The principle of a laser gyro is based on:
5 - The position of the Flight Director command bars:
6 - The Ground Proximity Warning System (GPWS) generates the following sound signal or signals when the aircraft is sinking after a take-off or a go-around:
7 - When compared with the volumetric fuel flowmeter, the mass fuel flowmeter takes into account the fuel:
8 - Considering an airspeed indicator, a second striped needle, if installed, indicates:
9 - On a modern aircraft, the flight director modes are displayed on the:
10 - When flying in warm air (warmer than standard atmosphere), indicated altitude is:
11 - In the northern hemisphere, during the take-off run in an easterly direction, a direct reading magnetic compass indicates:
12 - A TCAS II (Traffic Collision Avoidance System) provides:
13 - The operating principle of the vertical speed indicator (VSI) is based on the measurement of the rate of change of:
14 - A gravity type erector is used in a vertical gyro device to correct errors on:
15 - During the approach, the radio altimeter indicates 950 ft. This is:
16 - VNO is the maximum speed:
17 - Given: Zp = pressure altitude, Zd = density altitude. CAS can be obtained from the following data:
18 - The range of a low altitude radio altimeter is:
19 - In a directional gyro, gimballing errors are due to:
20 - Given: Pt: total pressure, Ps: static pressure, Pd: dynamic pressure. The altimeter is fed by:
21 - Due to the rotation of the Earth, the apparent drift of a horizontal free gyroscope at a latitude of 45°N is:
22 - In a turn at a constant angle of bank, the turn indicator reading is:
23 - When, in flight, the needle of a needle-and-ball indicator is on the right and the ball on the left, the aircraft is:
24 - An air data computer 1. supplies the ground speed and the drift (angle) 2. determines the total temperature and the true altitude 3. receives the static pressure and the total pressure 4. supplies the true airspeed to the inertial unit 5. determines the Mach number, the outside (static) air temperature. The combination regrouping all the correct statements is:
25 - If the static source to an altimeter becomes blocked during a climb, the instrument will:
26 - Concerning the directional gyro indicator, the latitude at which the apparent wander is equal to 0 is:
27 - With EAS and pressure altitude (Zp), we can deduce:
28 - A temperature sensor has a recovery factor of 0,95. The temperature measured is equal to:
29 - An aeroplane is in steady cruise at flight level 270. The auto-throttle maintains a constant calibrated airspeed. If the static air temperature decreases, the Mach number:
30 - During deceleration following a landing in a northerly direction, a magnetic compass made for the southern hemisphere indicates:
31 - If the outside temperature at 35 000 feet is -40°C, the local speed of sound is:
32 - When climbing at a constant CAS in a standard atmosphere:
33 - A directional gyro is: 1- a gyroscope free around two axis 2- a gyroscope free around one axis 3- capable of self-orientation around an earth-tied direction 4- incapable of self-orientation around an earth-tied direction. The combination which regroups all of the correct statements is: NB: the degree(s) of freedom of a gyro does not take into account its rotor spin axis.
34 - For the same TAS, when pressure altitude decreases below the tropopause:
35 - Compared with a conventional gyro, a laser gyro:
36 - When climbing at a constant Mach number:
37 - The altimeter of your aircraft indicates 11000 ft with a subscale-setting of 1013,25 mb. QNH is 1023 hPa. OAT is +3°C. The pressure altitude of the aircraft is:
38 - Given: - Ts the static temperature (SAT)- Tt the total temperature (TAT)- Kr the recovery coefficient- M the Mach numberThe total temperature can be expressed approximately by the formula:
39 - A vibration indicator receives a signal from different sensors (accelerometers). It indicates the:
40 - The velocity of sound at the sea level in a standard atmosphere is:
41 - The rate-of-turn is the:
42 - Which of the statements about computer architecture are correct or incorrect? 1) The software part includes the programs that make up the operating system (OS). 2) The hardware part includes the physical components of the computer.
43 - If, in the event of a failure, the approach, flare and landing can be completed by the remaining part of the automatic system, such an automatic landing system is considered as:
44 - When, in flight, the needle of a needle-and-ball indicator is on the left and the ball on the right, the aircraft is:
45 - The indication of a fuel float gauge varies with: 1 - pitch attitude 2 - accelerations 3 - fuel temperature. The combination that regroups all of the correct statements is:
46 - The operation of the radio altimeter of a modern aircraft is based on:
47 - An aneroid capsule: 1 - measures differential pressure 2 - measures absolute pressure 3 - is used for low pressure measurement 4 - is used for very high pressure measurement. The combination regrouping all the correct statements is:
48 - In an autopilot system, the basic stabilisation modes are: 1) Altitude hold. 2) Pitch attitude hold. 3) Roll attitude hold. 4) IAS hold. The combination regrouping all the correct statements is:
49 - Given: Zp = pressure altitude Zd = density altitudeTAS can be obtained from the following data:
50 - During deceleration following a landing in a westerly direction, a magnetic compass made for the southern hemisphere indicates:
51 - The principle of the TCAS (Traffic Collision Avoidance Systems) is based on the use of:
52 - The vertical speed indicator (VSI) is fed by:
53 - If an aircraft is flying (with flaps and landing gear retracted) in proximity to terrain and its GPWS (Ground Proximity Warning System) gets activated, because it is detecting that the aeroplane has an excessive rate of descent, the system provides the following aural warning signals:
54 - The signal transmitted by a radio altimeter is:
55 - The FMS Overfly function consists in:
56 - The operating frequency range of a low altitude radio altimeter is:
57 - In the directional gyro the detection system of the local vertical feeds:
58 - On a TCAS2 (Traffic Collision Avoidance System), a corrective 'resolution advisory' (RA) is a 'resolution advisory':
59 - The error in altimeter readings caused by the variation of the static pressure near the source is known as:
60 - The upper antenna of the TCAS II is:
61 - The diagram shows three gyro assemblies: A, B and C. Among these gyros,-one is a roll gyro (noted 1) -one is a pitch gyro (noted 2) -one is a yaw gyro (noted 3). The correct matching of gyros and assemblies is:
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62 - If the static source of an altimeter becomes blocked during a descent the instrument will:
63 - If an aircraft maintaining a constant CAS and flight level is flying from a cold air mass into warmer air:
64 - Sound propagates through the air at a speed which only depends on:
65 - If OAT increases when at a constant TAS:
66 - In the northern hemisphere, during deceleration following a landing in a northerly direction, a direct reading magnetic compass indicates:
67 - The principle of capacity gauges is based on the:
68 - The altimeter of your aircraft indicates 15000 ft with a subscale-setting of 1013,25 mb. OAT is -21°C. The pressure altitude of the aircraft is:
69 - In an Air Data Computer (ADC), aeroplane altitude is calculated from:
70 - The block diagram of an auto-pilot is shown in the annex. For each control channel (pitch, roll and yaw) the piloting law is the relationship between the deflection of the control surface commanded by the computer (BETA c) and the:
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71 - In a steep turn, the northerly turning error on a magnetic compass on the northern hemisphere is:
72 - The properties of a gyroscope are: 1 - rigidity in space 2 - rigidity on earth 3 - precession 4 - Schuler oscillations. The combination regrouping all the correct statements is:
73 - For the same TAS, when pressure altitude increases below the tropopause:
74 - The purpose of an aeroplane automatic trim system is to trim out the hinge moment of the:
75 - The two main sources of information used to calculate turbojet thrust are the:
76 - The spin axis of the turn indicator gyroscope is parallel to the:
77 - The purpose of the vibrating device of an altimeter is to:
78 - Given: Pt = total pressure, Ps = static pressure, Pd = dynamic pressure
79 - In order to know in which mode the auto-throttles are engaged, the crew will check the:
80 - An aircraft in the northern hemisphere makes an accurate rate one turn to the right. If the initial heading was 330°, after 30 seconds of the turn the direct reading magnetic compass should read:
81 - Below the tropopause, when descending at constant CAS:
82 - When being engaged, and without selecting a particular mode, an automatic pilot enables:
83 - One of the errors inherent in a ring laser gyroscope occurs at low input rotation rates tending towards zero when a phenomenon known as 'lock-in' is experienced. What is the name of the technique, effected by means of a piezo-electric motor, that is used
84 - The diagram representing a left turn with insufficient rudder is:
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85 - On the ground, during a left turn, the turn indicator indicates:
86 - An aircraft is flying at an indicated altitude of 16.000 ft. The outside air temperature is -30°C. What is the true altitude of the aircraft?
87 - A leak in the pitot total pressure line of a non-pressurized aircraft to an airspeed indicator would cause it to:
88 - An aeroplane is cruising at FL 220. The auto-throttle maintains a constant CAS. If the OAT decreases, the Mach number:
89 - In the building principle of a gyroscope, the best efficiency is obtained through the concentration of the mass:
90 - A ground proximity warning system (GPWS), when mandatory installed on board an aircraft, must in all cases generate:
91 - During a category III automatic approach, the position signals in the vertical plane under 200 ft are based on:
92 - Among the systematic errors of the 'directional gyro', the error due to the earth rotation make the north reference turn in the horizontal plane. At a mean latitude of 45°N, this reference turns by...
93 - A pilot wishes to turn left on to a southerly heading with 20° bank at a latitude of 20° North. Using a direct reading compass, in order to achieve this he must stop the turn on an approximate heading of:
94 - At a low bank angle, the measurement of rate-of-turn actually consists in measuring the:
95 - The limits of the green scale of an airspeed indicator are:
96 - The command bars of a flight director:
97 - The elements which take part in the local vertical alignment of an inertial strap-down unit are:
98 - The density altitude is:
99 - A laser gyro consists of:
100 - Concerning the flight warning system (FWS), advisory messages may be:
101 - To be as accurate as possible, an anemometer must be calibrated according to the following formula:
102 - The alignment sequence of an IRS consists of: 1 - searching for the local vertical 2 - searching for the true north 3 - searching for the latitude 4 - searching for the longitude 5 - comparison between the computed longitude and the one entered by the pilot 6 - comparison between the computed latitude and the one entered by the pilot. The combination that regroups all of the correct statements is:
103 - The Mach trim system allows to:
104 - A thermocouple type thermometer consists of:
105 - The sequence of the automatic landing comprises several phases (from final approach to touch-down) actuated by:
106 - At 50 feet AGL during an auto-land, what happens to the glideslope signal?
107 - On the ground, during a right turn, the turn indicator indicates:
108 - Given: E = electromotive force (emf), Tc = cold junction temperature, Th = hot junction temperature, K = constant. The relationship that applies to a thermocouple is:
109 - For an aircraft flying a true track of 360° between the 5°S and 5°N parallels, the precession error of the directional gyro due to apparent drift is equal to:
110 - The TCAS II has inputs from the radio altimeter in order to:
111 - Machmeter readings are subject to:
112 - The gauge indicating the quantity of fuel measured by a capacity gauging system can be graduated directly in weight units because the dielectric constant of fuel is:
113 - Magnetic compass errors are:
114 - In an inertial navigation system (INS), should the platform be displaced from the horizontal, it would oscillate with a period, called Schuler period, of about:
115 - When flying in cold air (colder than standard atmosphere), the altimeter will:
116 - Iron and brass are commonly used in bimetallic thermometers, because:
117 - The measurement of the turbine temperature or of the EGT is carried out at the:
118 - Heading information from the gyromagnetic compass flux gate is transmitted to the:
119 - After having programmed your flight director, you see that the indications of your ADI (Attitude Director Indicator) are as represented in diagram N°1 of the appended annex. On this instrument, the command bars indicate that you must:
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120 - Modern low altitude radio altimeters emit waves in the following frequency band:
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