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Avionica UD1&2

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Quiz on Avionica UD1&2, created by 72 promocion on 11/05/2020.
72 promocion
Quiz by 72 promocion, updated more than 1 year ago
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Created by 72 promocion almost 4 years ago
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Resource summary

Question 1

Question
Which of the following loads of the gear is the biggest one
Answer
  • Vertical load
  • Friction
  • Gear recoil
  • Aerodynamic loads

Question 2

Question
What is the bleeding system that is used on fighter aircrafts?
Answer
  • a) High pressure system with a heat exchanger with ambient air
  • b) High and low pressure system with a heat exchanger between them
  • c) High and medium pressure system with an anti-return valve
  • d) Answer c and also with a heat exchanger with the fan flow

Question 3

Question
The Kreuger flap is placed at:
Answer
  • Leading edge
  • Trailing edge
  • Wing tip
  • c/2 of the chord

Question 4

Question
Factor affecting the fatigue
Answer
  • With more temperature less fatigue
  • Traction is the load that causes more fatigue
  • Corrosion decreases fatigue
  • Welding decreases fatigue

Question 5

Question
Choose the more correct option about these De-Icing system types:
Answer
  • There are three types: cyclical, wets, and evaporative.
  • In aviation there are only anti-icing systems, not de-icing.
  • There are mainly three types: cyclic, by evaporation and wets. The latter are in danger of ice forming downstream.
  • All of the above are false.

Question 6

Question
One of main uses of the pneumatic system is:
Answer
  • a) Movement of the control surfaces (flaps, slats…)
  • b) Cabin pressurization and air conditioning
  • c) Pitot tube anti-icing
  • d) As a help to the afterburner

Question 7

Question
According to the structure levels. Which level if fails ensures no catastrophic failure but limited operations.
Answer
  • Primary
  • Secondary
  • Tertiary
  • Non of them

Question 8

Question
About the Anti-Icing system of the pitot set:
Answer
  • It is based on a fluid heating system.
  • It consists of an electrical resistance system inside the pitot tube.
  • It is based on an electrical heating system of the outer surface of the pitot tube.
  • It is false that there is an anti-ice system in the pitot complex since the formation of ice in it is not contemplated.

Question 9

Question
Which of the following is not one of the rules that a pneumatic system must comply with?
Answer
  • a) It should exist a shut-off valve in case of emergency
  • b) The bleed quantity should be the minimum
  • c) It should be situated far from engine
  • d) A system should be integrated to report the status of the valves

Question 10

Question
Which structure is damage tolerant
Answer
  • Fail safe structure
  • Life safe structure
  • Jar 23 structure
  • Primary structure

Question 11

Question
Choose the incorrect option referred to the Electro Expulsive De-Icing System:
Answer
  • The system is based on an electromagnetic wave that induces a current on the edge surface.
  • It is effective against very thin ice, even 0.7mm.
  • The system has a high consumption.
  • a) and b) are correct, c) is incorrect.

Question 12

Question
What is the name of the aids to the vertical fly of the Harrier, which are situated on wingtips and use bleed air?
Answer
  • a) Puffers
  • b) Slots
  • c) Directional nozzle
  • d) This system doesn’t exist

Question 13

Question
Select the incorrect type of joints
Answer
  • Mechanical
  • Adhesive
  • Metals
  • Anodized

Question 14

Question
About the Anti-Ice systems:
Answer
  • The El-Thermal and Bleed Air systems are capable of removing thinner ice than the Pneumatic Boots and Expulsive systems, and they also have shorter life cycles.
  • El-Thermal and Bleed Air systems have infinite life cycles, but Pneumatic Boots and Expulsive systems can remove thinner ice.
  • El-Thermal and Bleed Air systems have infinite life cycles and also remove thinner ice than Pneumatic Boots and Expulsive systems.
  • All four systems have infinite life cycles but the El-Thermal and Bleed Air systems can remove thinner ice.

Question 15

Question
The pneumatic systems:
Answer
  • a) They can replace to the hydraulic system in any case
  • b) Usually they have more applications than the hydraulic system
  • c) They require high working pressures
  • d) All of above are false

Question 16

Question
Which is not an advantage of composites
Answer
  • Ptfe
  • Gfrp
  • Cfrp
  • aramid

Question 17

Question
Choose the correct option:
Answer
  • The first point where icing occurs is generally in the ice detection system, due to its characteristics such as fine edges and the stagnation point condition.
  • The first point where ice formation takes place is at the wing ends.
  • A preventive measure when flying in icy conditions is the use of the autopilot.
  • The “Vibrating rod ice detector” is the most effective and extended flight ice detection system.
  • The statements a) and d) are correct.

Question 18

Question
One of the advantages of the pneumatic system is:
Answer
  • a) It need low pressures for work
  • b) It don’t need a return route, the air is available at the atmosphere
  • c) It’s rare to have leaks
  • d) All of above are advantages

Question 19

Question
Which is not an advantage of composites
Answer
  • Fatigue reduction
  • Weight
  • Properties
  • Maintenance

Question 20

Question
Choose the correct option:
Answer
  • The propeller De-Icing system involves a reduction in aerodynamic capacities as well as mass unbalanced that can cause vibrations.
  • The engine's antifreeze system normally mixes hot air with oil.
  • Statements a) and b) are correct.
  • All the statements are false.

Question 21

Question
The bleed air comes from:
Answer
  • a) Engine compressor in jet engines
  • b) Turbocharges in no jet engines
  • c) Engine turbine in jet engines
  • d) a and b are true

Question 22

Question
The aluminium alloy most used in aviation is
Answer
  • 70-75
  • 60-65
  • 40-45
  • 30-35

Question 23

Question
Choose the incorrect option:
Answer
  • A key solution against damage from electric shock (lightning) on ​​aircraft is to make the structure as a whole a good electrical conductor.
  • Approximately an aircraft suffers 1 lightning strike per 1500 flight hours.
  • Continuity in the structure of the aircraft in addition to ensuring that it acts as a "mesh" have no importance in terms of lightning strikes.
  • Normally tests and simulations are carried out to determine the areas most susceptible to damage.

Question 24

Question
The air bleeding from the engine:
Answer
  • a) Must go through a conditioning system before being used
  • b) Can be used directly from the engine
  • c) Usually it is only use during the aircraft is on ground
  • d) All of above are false

Question 25

Question
The best aircraft shape for supersonic flight is made considering:
Answer
  • Smooth contours to minimize drag
  • Cylindrical shape to minimize drag
  • Area rule to minimize drag
  • Wingspan rule to maximize lift

Question 26

Question
Regarding the “Static Precipitation” phenomenon, it can be stated that:
Answer
  • The phenomenon takes place because the structure is positively charged.
  • The phenomenon occurs due to the negative charge of the structure, and is based on the electrical asymmetry that takes place between the different parts of the aircraft.
  • The discharges can cause electronic noise in the systems, and even greater damages if these are of great intensity.
  • b) and c) are correct.

Question 27

Question
What is the structure that better resists the pressure?
Answer
  • Cylindrical
  • Square
  • Triangular
  • Sphere

Question 28

Question
When a Kreuger flap is actioned the curvature/geometry of the aerodynamic profile is modified, whereas with a Slat this does not occur:
Answer
  • True
  • False
  • False, the Kreuger flap does not change the curvature of the aerodynamic profile
  • False, with the Slat the same thing happens

Question 29

Question
The monocoque structure is usually used in:
Answer
  • Airlines aircrafts
  • Missiles
  • Military aircrafts
  • Light gliders

Question 30

Question
The most popular flap extension mechanism is:
Answer
  • Paddling
  • Articulated Rods
  • Rails
  • None of them

Question 31

Question
Semi-monocoque advantages over monocoque is:
Answer
  • Easyly to repair
  • Reduced weight
  • More tolerant to damage
  • All of the above

Question 32

Question
The main advantage of an hydraulic system over an electrical system for the extension of the landing gear/flaps is
Answer
  • Less cost
  • It provides a faster actuation
  • It provides a greater force
  • Less weight

Question 33

Question
Torsion is suported by:
Answer
  • Skin
  • Stringers
  • Formers
  • All of the above, which is called torsion box

Question 34

Question
The main problem that the first analog Fly-By-Wire had was:
Answer
  • Unreliable system due to actuator
  • The system crashed when receiving conflicting commands between pilot and actuator
  • Delay between command and action on control surfaces
  • Very heavy wiring and electrical system

Question 35

Question
All the passengers must leave the aircraft with 50% operative doors in:
Answer
  • 30 seconds
  • 90 seconds
  • Two minutes
  • Three minutes

Question 36

Question
Power By Wire (FBW) works with a ________ electrical system
Answer
  • Single phase (monophasic)
  • Two phase (bifasic)
  • Three phase
  • None of them

Question 37

Question
Spars, ribs, stringers and skin are:
Answer
  • Structural elements
  • Engine elements
  • Electric elements
  • Fire protection elements

Question 38

Question
The main difference between Integrated Actuator Package (IAP) and Power By Wire (PBW) is that the PBW’s electric motor constantly pressurizes the hydraulic system. While the IAP, has an hydraulic engine that pressurizes the system at the request of the actuator.
Answer
  • True
  • False
  • False, the IAP does not have an actuator
  • False, the PBW does not have an electric motor.

Question 39

Question
Braced monoplaces are used for
Answer
  • High-speed aircrafts
  • Low-speed aircrafts
  • Supersonic aircrafts
  • Acrobatic aircrafts

Question 40

Question
The Electro-mechanical Actuator (EMA) has not yet been tested on primary controls of an aeroplane:
Answer
  • True
  • False, it was first tested on 2017
  • True, and it is never going to be tested due to its complexity
  • False, it was first tested on 2019

Question 41

Question
What can be considered such as the main advantage of biplane aircraft?
Answer
  • Double lift
  • Easiest production
  • Esthetical reasons
  • Structural strengths

Question 42

Question
The wing mounted landing gear is attached to:
Answer
  • a. Any part of the wing span
  • b. The main spar
  • c. The main span or any stringer, it doesn´t matter
  • d. There are no wing mounted landing gears

Question 43

Question
The wing mounted landing gear is attached to:
Answer
  • a. Any part of the wing span
  • b. The main spar
  • c. The main span or any stringer, it doesn´t matter
  • d. There are no wing mounted landing gears

Question 44

Question
Cables in biplane aircraft were interesting because:
Answer
  • Compression efforts
  • Tension efforts
  • Both compression and torsion.
  • The main advantage was drag reduction

Question 45

Question
In general, cantilevered wings require a rigidization that consist of:
Answer
  • a. The joint of two spars from the wing to the main longeron of the fuselaje
  • b. The addition of auxiliar spars
  • c. Both A and B are correct
  • d. None of the previous is correct

Question 46

Question
In general, cantilevered wings require a rigidization that consist of:
Answer
  • a. The joint of two spars from the wing to the main longeron of the fuselaje
  • b. The addition of auxiliar spars
  • c. Both A and B are correct
  • d. None of the previous is correct

Question 47

Question
Which efforts were responsible of excessive angle of attack accidents:
Answer
  • Compression
  • Tension
  • Torsion
  • G forces

Question 48

Question
One advantage of low wing is:
Answer
  • a. Shorter landing gear with lower weight
  • b. Fuselage closer to ground
  • c. Prevent floating (ground effect) when landing
  • d. Both B and C are correct

Question 49

Question
One advantage of low wing is:
Answer
  • a. Shorter landing gear with lower weight
  • b. Fuselage closer to ground
  • c. Prevent floating (ground effect) when landing
  • d. Both B and C are correct

Question 50

Question
The internal force within the structure that opposes the external force is:
Answer
  • Buckling
  • Strain
  • Stress
  • Strain or stress indifferently

Question 51

Question
One advantage of high wing:
Answer
  • a. Shorter landing gear with lower weight
  • b. Fuselage closer to ground
  • c. Prevent floating (ground effect) when landing
  • d. Both B and C are correct

Question 52

Question
One advantage of high wing:
Answer
  • a. Shorter landing gear with lower weight
  • b. Fuselage closer to ground
  • c. Prevent floating (ground effect) when landing
  • d. Both B and C are correct

Question 53

Question
Buckling effect appears due to ______ efforts:
Answer
  • Buckling
  • Compression
  • Tension
  • Torsion

Question 54

Question
One disadvantage of high wing is:
Answer
  • a. Blocks pilot´s visibility in small aircrafts
  • b. Bigger engines are allowed
  • c. Requires structures to accomodate the landing gear
  • d. Both A and C are correct

Question 55

Question
One disadvantage of high wing is:
Answer
  • a. Blocks pilot´s visibility in small aircrafts
  • b. Bigger engines are allowed
  • c. Requires structures to accomodate the landing gear
  • d. Both A and C are correct

Question 56

Question
Which of that reduces buckling effect:
Answer
  • Thinner coating
  • Thicker coating
  • More distance between anchor points
  • It is specific and fix for each material

Question 57

Question
The element used to attach the engine to the wing is called
Answer
  • a. Pylon
  • b. Spar
  • c. Formeron
  • d. Rib

Question 58

Question
The element used to attach the engine to the wing is called
Answer
  • a. Pylon
  • b. Spar
  • c. Formeron
  • d. Rib

Question 59

Question
Which could be a good reaction to stop buckling effect:
Answer
  • Do not touch aerodynamic controls
  • Climb or descent immediately
  • Increase or reduce speed
  • Turn 90 degrees left or right

Question 60

Question
Comparing the tailplane structure with a wing´s one:
Answer
  • a. The tailplane has more ribs and les stringers to provide it more torsion rigidity
  • b. Both structures are exactly equal
  • c. In fighters the tailplane has formerons to give the fuselaje more rigidity
  • d. All the previous are false

Question 61

Question
Comparing the tailplane structure with a wing´s one:
Answer
  • a. The tailplane has more ribs and les stringers to provide it more torsion rigidity
  • b. Both structures are exactly equal
  • c. In fighters the tailplane has formerons to give the fuselaje more rigidity
  • d. All the previous are false

Question 62

Question
What is not considered such as a function of the airframe:
Answer
  • Protect passengers and payload
  • Resist applied loads
  • Provides thrust to the aircraft
  • Defines aerodynamic shape

Question 63

Question
Most fighter planes tailplanes are categorized as:
Answer
  • a. Conventional
  • b. T-tail
  • c. Twin tail
  • d. H-tail

Question 64

Question
Most fighter planes tailplanes are categorized as:
Answer
  • a. Conventional
  • b. T-tail
  • c. Twin tail
  • d. H-tail

Question 65

Question
C-101 landing gear has the following configuration
Image:
101 (binary/octet-stream)
Answer
  • Tricycle.
  • Quadricycle
  • Bicycle
  • Multi-bogey.

Question 66

Question
1. Choose the incorrect answer. The advantages of HYDR.SYSTEMS are:
Answer
  • a. Self-Lubricant System
  • b. Easy instalation
  • c. Low cost
  • d. Useful for small forces

Question 67

Question
El tipo de llanta más utilizada en las aeronaves es:
Answer
  • Llantas “well base”, similares a las utilizadas en automoción.
  • Llantas “detachable flange”.
  • Llantas del tipo “Split hub”, que se se dividen en dos partes para facilitar el montaje y desmontaje de los neumáticos.
  • Ninguna de las anteriores.

Question 68

Question
2. Choose the incorrect HYDRAULIC vs PNEUMATIC:
Answer
  • a. The power of pums can work up to pressure ratio of 650, but the power of the pneumatic system is limited.
  • b. Pneumatic systems have stop time while hyudralic systems work continuously.
  • c. Hyudralic system has greater pressure losses due to viscous effects, and pneumatic dissipate more heat due to compressibility effects (hyudralics are generally more efficient)
  • d. Hyudralic system has greater pressure losses due to compressibility effects, and pneumatic dissipate more heat due to viscous effects (hyudralics are generally more efficient)

Question 69

Question
Most used tyres in aeronautical are:
Answer
  • Common tyres as used in automotive.
  • Radial tyres, which are more resistant.
  • Both, regarding it is front tyre or principal gear
  • None of the above

Question 70

Question
3. Desired properties, choose the incorrect:
Answer
  • a. Low viscosity
  • b. High viscosity
  • c. Resistance to heat
  • d. Good lubricant properties

Question 71

Question
Drawing used in tyres most commonly is:
Answer
  • Longitudinal, In order to improve the surface resistance during the braking
  • Both directions as in automotive
  • any of them because it is just aesthetic
  • None is the above

Question 72

Question
4. Types of HYD fluids:
Answer
  • a. Vegetable-based, mineral-based, sintethic base
  • b. Vegetable-based, water-based, sintethic base
  • c. Vegetable-based, oil-based, sintetic base
  • d. Vegetable-based, fuel-based, hyudaulic base

Question 73

Question
Aquaplaning or hydroplanning occurs in aeronautical when:
Answer
  • It rains to much and the aeroplane surface gets wet
  • When the amount of water accumulated in front of the tyre is enough to lift it and make it lose its adhesion
  • Every time the runway is wet
  • None of the above

Question 74

Question
5. Basic elements of hydraulic systems are, choose the incorrect:
Answer
  • a. Reservoir
  • b. Pump
  • c. Selector Valve
  • d. Triple Acting clylinder

Question 75

Question
aeroplanes have different kind of control surfaces
Answer
  • Primarias: alerones, estabilizadores horizontal y vertical. Primary: ailerons, horizontal and vertical stabilisers
  • Secondary: flaps and aero brakes .
  • A and B are correct
  • A y B are false

Question 76

Question
6. Nowadays typical HYD pessures are:
Answer
  • a. 3000-4000 psi
  • b. 200-100 psi
  • c. 15000-25000 psi
  • d. 1000-10000 psi

Question 77

Question
controls in present aeroplanes, manufactured from the 90s, are:
Answer
  • By Fly-by-wire technology
  • with cables and pulleys
  • by power-by-wire technology
  • None of above

Question 78

Question
7. Linear actuartors = jacks
Answer
  • a. Convert fluid pressure into linear motion
  • b. Convert linear motieon into circular motion
  • c. Convert fluid motion into linear pressure
  • d. All are false

Question 79

Question
En determinados aviones, se utilizan unos alerones también para obtener efectos hipersustentadores. Estos reciben el nombre de:
Answer
  • Alerones.
  • Flaps.
  • Flaperones.
  • Ninguna de las anteriores.

Question 80

Question
8. Selectors or flow control devices, choose the incorrect:
Answer
  • a. Rotary selectors
  • b. Linear or spool valve selectors
  • c. Electrical locks
  • d. Non-return valves (NRV)

Question 81

Question
FBL means:
Answer
  • Fly by Light and is based on the use of optic fibre
  • Fod by Landing
  • Fresh Beacon Light and its use as a navaid is crucial
  • Fly by Light

Question 82

Question
Las siglas EAP se corresponden con
Answer
  • Electronic Auto-Pilot, siendo el prototipo del F14
  • Experimental Aircraft Programme, siendo el prototipo de F22
  • Extreme Aerobatic Performance, siendo el prototipo del F35
  • Experimental Aircraft Programme, siendo el prototipo del EFA2000

Question 83

Question
El sistema FBL tiene entre sus ventajas
Answer
  • Es un sistema muy utilizado y desarrollado
  • Evita las interferencias electromagnéticas
  • Es más estético
  • Evita el uso de superficies de vuelo

Question 84

Question
Durante la WWII los sistemas anti-hielo incluían
Answer
  • El uso de anticongelante líquido que se rociaba sobre el borde de ataque a través de unas perforaciones en el mismo
  • El uso de anticongelante líquido que se rociaba en vuelo desde la cabina mediante el uso de mangueras
  • El uso de energía eléctrica que impedía la formación de hielo
  • No existió tal sistema durante la década de los 40

Question 85

Question
El coeficiente de resistencia de un ala con hielo
Answer
  • Disminuye siempre
  • Aumenta
  • No afecta a la performance
  • El hielo no puede adherirse al ala en vuelo

Question 86

Question
Los sistemas anti-hielo
Answer
  • No pueden prevenir la formación de hielo
  • Previenen la formación del hielo
  • Eliminan el hielo una vez formado
  • Son demasiado costosos para ser incluidos en vuelos comerciales

Question 87

Question
Los sistemas “de-ice”
Answer
  • No pueden prevenir la formación de hielo
  • Previenen la formación del hielo
  • Eliminan el hielo una vez formado
  • Son demasiado costosos para ser incluidos en vuelos comerciales

Question 88

Question
El comandante de la aeronave
Answer
  • Puede despegar con hielo formado porque existen sistemas a tal efecto
  • Nunca ha causado un accidente el despegar con hielo cargado
  • Siempre puede despegar con hielo, aunque no tenga un sistema anti hielo para eliminarlo posterior al despegue
  • Es responsable de que la aeronave despegue sin ninguna formación de hielo en la aeronave

Question 89

Question
Which one of the following elements is not part of a liquid springs damping system in a landing gear?
Answer
  • a. Piston
  • b. Cylinder with silicon-based fluid
  • c. Gland
  • d. Tire

Question 90

Question
Oleo-pneumatic shock absorbers in landing gears
Answer
  • a. Are obsolete
  • b. Use oil and gas
  • c. Use a silicon-based fluid and gas
  • d. Only use a silicon-based fluid

Question 91

Question
The main function of torque links is to
Answer
  • a. Ensure that the wheel rotation plane is perpendicular to the surface
  • b. Provide prop ground clearance
  • c. Provide directional control in the ground
  • d. Avoid shimmy

Question 92

Question
The tail wheel in a conventional landing gear
Answer
  • a. Always can be rotated by the pilot from the cockpit
  • b. Can be directionally free
  • c. Can be locked with springs
  • d. Both b) and c) are correct

Question 93

Question
Which one from the following is a type of wheel steering system?
Answer
  • a. Banana
  • b. Banana with movable rod
  • c. Linear with movable rod
  • d. All the above are correct

Question 94

Question
Regulations demand landing gears not to experiment shimmy until
Answer
  • a. 0,5 · Vstall
  • b. 1,3 · Vstall
  • c. 100 knots
  • d. 200 knots

Question 95

Question
Hop dumpers
Answer
  • a. Are used in the bogies of landing gears
  • b. Avoid pitching oscillations during braking the airplane
  • c. Both a) and b) and correct
  • d. All the above are incorrect

Question 96

Question
Which of the following is a disadvantage of retractable gear housing in the wing?
Answer
  • a. Creation of additional aerodynamic drag
  • b. Loss of cargo volume
  • c. Loss of fuel space
  • d. There are not disadvantages

Question 97

Question
The disadvantage of liquid air cooling systems is:
Answer
  • a) They are expensive
  • b) They are toxic
  • c) They need a special seal
  • d) All are correct

Question 98

Question
The classic cabin temperature control system is carried out by:
Answer
  • a) The Martin Bridge
  • b) The Control Bridge
  • c) The Temperature Bridge
  • d) The Wheatstone Bridge

Question 99

Question
It is difficult to control the humidity of the air cooling system because:
Answer
  • a) At high altitudes the air is more humid
  • b) At high altitudes the air is drier
  • c) It is not difficult, it is very easy
  • d) It is not possible to control the air humidity of that system

Question 100

Question
Refering to the air cabin distribution in a transport plane, air velocities must be:
Answer
  • a) Between 10 and 12 m/min
  • b) Between 6 and 12 m/min
  • c) Between 5 and 10 m/min
  • d) Between 3 and 8 m/min

Question 101

Question
The maximum safe altitude for pilots without oxygen in
Answer
  • a) 15000 ft
  • b) 20000 ft
  • c) 25000 ft
  • d) 21000 ft

Question 102

Question
According to the regulation of JAR 23 and JAR25, the maximum cabin altitude for passengers is:
Answer
  • a) 7000 ft
  • b) 6000 ft
  • c) 10000 ft
  • d) 8000 ft

Question 103

Question
Types of cabin pressure control systems:
Answer
  • a) Pneumatic
  • b) Electro – pneumatic
  • c) Electronic
  • d) All are correct

Question 104

Question
In which decompression level does the equalize to ambient pressure occur between 0 and 4 seconds?
Answer
  • a) Rapid decompression
  • b) Normal decompression
  • c) Explosive decompression
  • d) Slow decompression

Question 105

Question
Which of the next instruments must be on any aircraft obligatorily :
Answer
  • Thermomether
  • Clock
  • Altimeter
  • All of the above

Question 106

Question
The organization with legal regulatory authority within the EU is:
Answer
  • EASA
  • JAA
  • FAA
  • None of the above

Question 107

Question
The time that a plane is allowed to fly with one engine inoperative is called:
Answer
  • Single-engine range
  • ICAO
  • ETOPS
  • AAJMG

Question 108

Question
Which one is not an air data instrument:
Answer
  • Machmeter
  • Vertical speed indicator
  • Altimeter
  • Turn indicator

Question 109

Question
The RAM effect:
Answer
  • Decreases air temperature
  • Increases air temperature
  • Can increase or decrease air temperature
  • Does not affect air temperature

Question 110

Question
Which of the following thermometers is not usually used in aviation:
Answer
  • Mercury thermometer
  • Thermistors
  • Thermocouples
  • Optical pyrometers

Question 111

Question
Which is the minimum ETOPS to be allowed to cross the Atlantic:
Answer
  • 60 min ETOPS
  • 120 min ETOPS
  • 180 min ETOPS
  • 370 min ETOPS

Question 112

Question
Which is the instrument arrangement used in the C101:
Answer
  • 6 grouping
  • T grouping
  • It uses difgial displays
  • None of the above

Question 113

Question
Solar Heating
Answer
  • a) Affect military aircraft cockpit through windscreen and canopy
  • b) Is a problem in fighters due to the large transparent cockpit to give good all around vision and the high altitude levels for fliying
  • c) When is combined with kinetic heating and rubber immersion or g-suits, special cooling measurements must be taken
  • d) All above are correct

Question 114

Question
Airframe system heat loads such as ECS, Engine, and Hydraulic, Fuel or Electric systems can produce heat.
Answer
  • a) True
  • b) False

Question 115

Question
International standard atmosphere changes affects more significatly:
Answer
  • a) Fliying to other countries (for example from a fairly warm area to a tropical area)
  • b) Fliying local flights
  • c) Fliying inside of Spain
  • d) Fliying upside down

Question 116

Question
In general terms:
Answer
  • a) In low altitudes it is needed cooling
  • b) In cruise altitudes it is needed heating due to the low temperatures
  • c) Both are true
  • d) Both are false

Question 117

Question
Generally, aircraft flying in high Mach numbers
Answer
  • a) Need cooling
  • b) Need heating
  • c) Both are true depending on the season
  • d) Both are false

Question 118

Question
Some cooling systems are:
Answer
  • a) Air cycle machines
  • b) Vapor cycle machines
  • c) The fridge machine
  • d) A and B are correct

Question 119

Question
Some heating systems are:
Answer
  • a) Hot air
  • b) Electrical heater
  • c) Combustion heater
  • d) All above are correct

Question 120

Question
Select the correct sentence:
Answer
  • a) CAU is the acronym of Cold Air Unit
  • b) CAU is the acronym of Cool Aircraft Unique
  • c) CAU is the acronym of Cold And Uncontrolled
  • d) All above are false

Question 121

Question
Some fighter jets use this system to change pitch and roll:
Answer
  • Flaps
  • Slats
  • Elevons
  • Spoilers

Question 122

Question
This plane use “canards” as flight control system:
Answer
  • C295
  • Eurofighter
  • C101
  • Super Puma

Question 123

Question
Cable operated control system:
Answer
  • Use electric pulses
  • Need hydraulic fluid to move control surfaces
  • Pilot must generate all the force to move the control surfaces
  • All are correct

Question 124

Question
In a hydraulic system, the PCU (Power Control Units):
Answer
  • Automatically activated when pilots fall asleep
  • Execute the control surface movement
  • It cannot be used on commercial planes
  • Guide the pilot how many degrees must change the attitude

Question 125

Question
Hydraulic power assist systems:
Answer
  • They can be reversible or irreversible
  • Cables must be tensed to avoid free-play effects
  • They can only be used in small planes
  • None of the above

Question 126

Question
“Yoke” as joystick is frequent in:
Answer
  • Gliders
  • Commercial airplanes
  • Helicopters
  • Autogyros

Question 127

Question
Related to fuel system architecture:
Answer
  • a. Each fuel system is able to supply at least 100% of the fuel flow required
  • b. Fuel delivered at the same pressure every time
  • c. Must be fitted with a main pump + backup or emergency pump
  • d. a and c are true

Question 128

Question
Where are fuel tanks normally located?
Answer
  • a. Fuselage
  • b. Wings
  • c. Vertical Stabilizer
  • d. a and b are true

Question 129

Question
What type of tank has problems with leakage and punctions?
Answer
  • Rigid tanks
  • Flexible tanks
  • Integral tanks
  • None of the above

Question 130

Question
Related to Flame arrestors:
Answer
  • Prevent the overflow while fuelling
  • Allow expansion due to temperature changes
  • Prevent negative differential pressure
  • Avoid that the fuel vapors possible ignition propagate into the fuel tank

Question 131

Question
Related to Fuel Booster Pumps:
Answer
  • Prevent aeration
  • Avoid cavitation
  • Electrically driven
  • All of the above

Question 132

Question
What are the different types of level sensors?
Answer
  • Float, Zener Diode, Capacitance, Ultrasonic, Optical
  • Float, Zener Diode, Capacitance, Ultrasonic
  • Float, Led Diode, Capacitance, Ultrasonic, Optical
  • Float, Capacitance, Ultrasonic, Optical

Question 133

Question
What is FOB?
Answer
  • Fuel On Booster
  • Fuel On Board
  • Fuel On Body
  • None of the above

Question 134

Question
Related to Fuel Jettison:
Answer
  • Move fuel from the main wing and fuselage tanks to the collector tanks
  • Supply fuel to the engines
  • Assist in forcing the fuel under relatively low pressure from certain tanks to other more strategically placed
  • If an emergency or malfunction after TO happens, it throws a large portion of the fuel to reduce weight rapidly

Question 135

Question
In a hydraulic system, the redundancy consist in
Answer
  • A) Systems that allow the pilot to act on surfaces in different ways.
  • B) Include a system that the pilot will activate in an emergency.
  • C) Redundancy cannot be applied to hydraulic systems.
  • D) Doubling surface controls or acting elements.

Question 136

Question
Linear actuators installed on control surfaces are characterized by:
Answer
  • A) Give a rapid response
  • B) Support reasonably light aerodynamic loads
  • C) Both A and B are correct
  • D) Support large aerodynamic loads

Question 137

Question
Some advantages of electrical power assist (or power boost) systems are:
Answer
  • A) The power is infinite
  • B) Better results are obtained than with the other methods
  • C) It is not feasible to apply electrical power to the control of flight surfaces.
  • D) It does not require the presence of a high pressure hydraulic fluid.

Question 138

Question
Regarding to the stick force gradient...
Answer
  • A) If it is very high, the pilot will be more precise in the movements of the aircraft.
  • B) The stick force gradient will maintain the position established by the pilot when he releases the controls.
  • C) It can be proportional to air dynamic pressure, to flight control displacement or both of the previous.
  • D) This may be regulated by the pilot according to his preferences.

Question 139

Question
About the aerodynamic balancing/trim:
Answer
  • A) It is defined as techniques to reduce or cancel the force that is needed to act on control surfaces and obtain certain flight condition.
  • B) Can be produced with or without tabs.
  • C) It results useful at high speed and/or large control surface, when manual operation is difficult.
  • D) All of them are correct

Question 140

Question
Choose the correct option with regar to "tabs"
Answer
  • A) You can have a direct or indirect control over the tab
  • B) The tabs always work autonomously, without the pilot being able to do any kind of action on them.
  • C) Tabs can only be implemented on ailerons.
  • D) These types of systems are not used in current aviation.

Question 141

Question
About anti-tab
Answer
  • A) Its main function is to automatically trim the aircraft.
  • B) It's an indirect tab
  • C) They increase the necessary force to be applied by the pilot, increasing control.
  • D) Both B and C are correct

Question 142

Question
Regarding to Spring Servo Tab...
Answer
  • A) At high speeds they allow direct control over the Tab
  • B) At low speeds the spring constant decreases the necessary force
  • C) Both A and B are correct
  • D) The spring reduces the necessary force on all kinds of actions

Question 143

Question
1. Which are the main variations of the four bars mechanism employed in retractable gears?
Answer
  • A. There is no classification, every aircraft employs its own mechanism.
  • B. Type A, B, C and D.
  • C. Type 1, 2, 3 and 4.
  • D. Type A, B y C, but only applied to aircraft’s main gear.

Question 144

Question
The mechanism that change the angle between the gear leg and the wheel axis when the gear is retracted is known as:
Answer
  • A. Rotator or planing link mechanism.
  • B. Type A2.
  • C. Type B.
  • D. None of the above.

Question 145

Question
Which are the main characteristics of the rotator or planing link mechanism?
Answer
  • A. Increase of weight.
  • B. Increase of complexity
  • C. Increase of maintenance.
  • D. All the above.

Question 146

Question
The most employed indicator of the gear placed in down and locked position is:
Answer
  • A. A flashing yellow light for the whole gear.
  • B. A green light for every mechanism: nose gear/s and main gear/s.
  • C. A check from the Tower prior to landing.
  • D. When the red light inside the landing gear control lever stops flashing and remains on.

Question 147

Question
Standard braking systems mainly work thanks to the conversion of aircraft’s forward motion into:
Answer
  • A. Heat energy.
  • B. Electric energy.
  • C. Magnetic energy.
  • D. Electromagnetic energy.

Question 148

Question
Braking systems are usually actuated though:
Answer
  • A. Electric power.
  • B. A steel cable connected to the cockpit.
  • C. Hydraulic systems.
  • D. The own aircraft’s weigh once it touches down.

Question 149

Question
Within a multi-disc braking system there are:
Answer
  • A. Rotor and stator discs.
  • B. Several discs with their own braking pads.
  • C. Discs on each side of the wheel.
  • D. None of the above (A,B & C)

Question 150

Question
When does the Anti-Skid system act?
Answer
  • A. When the wheel suffers a puncture.
  • B. Only when landing in snowy conditions.
  • C. When the windshear is above 20 knots.
  • D. When a wheel is locked though the braking.

Question 151

Question
Which of these answers is NOT a classification of landing gears?
Answer
  • Single main
  • Tricycle
  • Taildragger
  • Double wheel

Question 152

Question
The functions and requirements of the landing gear are:
Answer
  • a) Withstand side loads when landing and taxiing
  • b) Absorb landing loads and damp vibrations
  • c) Possess a high drag coefficient
  • d) A and B are correct

Question 153

Question
What is the disadvantage of taildragger?
Answer
  • The pilot has poor visibility when landing due to the elevation of the nose
  • The plane tends to turn over
  • The nose wheel generates a positive moment (forward)
  • All answers above are correct

Question 154

Question
Track (vía) = Distance between the center of the treads of the main gears. If there are more than 2:
Answer
  • It will be considered the two closest from the symmetry plane
  • It will be considered the two further from the symmetry plane
  • It will be considered the average of the outer distance
  • It will be considered the average of the inner distance

Question 155

Question
The center of gravity of an airplane with tricycle configuration:
Answer
  • It is behind the main gear
  • It is in front of the main gear
  • It is indifferent
  • It depends on the plane

Question 156

Question
The gear in pods configuration is used in:
Answer
  • Fighter aircraft
  • Cargo airplanes
  • Passenger airplanes
  • That configuration does not exist

Question 157

Question
The extension and retraction of the landing gear can be:
Answer
  • Electric
  • Hydraulic
  • Pneumatic
  • All answers above are correct

Question 158

Question
Factors in landing are:
Answer
  • a) Mass
  • b) Vertical velocity at touch down
  • c) Horizontal velocity at touch down
  • d) All above are correct

Question 159

Question
What is the civil regulation that regulates the anti-icing on land?
Answer
  • JAR 23/25
  • RCAO
  • Law 5/2005
  • IG-004

Question 160

Question
In ground, what areas of the plane should be paid attention for ice?
Answer
  • The tires and wheels.
  • The windows of the cabin
  • The pitot tube
  • The control mobile surfaces, and their union with the fixed surfaces.

Question 161

Question
Where is hot air taken out in a reactor to inflate the pneumatic boots anti-icing system?
Answer
  • Compressor air
  • Pitot tube and static socket
  • Vacuum pump
  • Of the leading edge.

Question 162

Question
Where does hot air get out on a propeller airplane to inflate the pneumatic boots anti-icing system?
Answer
  • Compressor air
  • Pitot tube and static socket
  • Vacuum pump
  • Of the leading edge.

Question 163

Question
What advantage does the pneumatic boot have as an anti-ice system?
Answer
  • It is economical and weighs little
  • It is aerodynamic
  • It can be optimized by changing its shape
  • It is resistant to the king

Question 164

Question
At what time does the antifreeze deactivate to conserve engine power?
Answer
  • Landing
  • Takeoff and landing
  • Every 15 minutes, in flight
  • Taxes

Question 165

Question
What disadvantage do pneumatic boots have as an anti-icing system?
Answer
  • It is not very aerodynamic and is incompatible with slats
  • It is very expensive
  • It is very heavy
  • It is not effective

Question 166

Question
Which of these is not an antifreeze system?
Answer
  • Pneumatic boots
  • thermal antifreeze system
  • Electro-expulsion anti-icing system
  • Burning paste system
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