Avionica UD1&2

Question 1 of 166

1

Which of the following loads of the gear is the biggest one

Select one of the following:

Vertical load
Friction
Gear recoil
Aerodynamic loads

Explanation

Question 2 of 166

1

What is the bleeding system that is used on fighter aircrafts?

Select one of the following:

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

Explanation

Question 3 of 166

1

The Kreuger flap is placed at:

Select one of the following:

Leading edge
Trailing edge
Wing tip
c/2 of the chord

Explanation

Question 4 of 166

1

Factor affecting the fatigue

Select one of the following:

With more temperature less fatigue
Traction is the load that causes more fatigue
Corrosion decreases fatigue
Welding decreases fatigue

Explanation

Question 5 of 166

1

Choose the more correct option about these De-Icing system types:

Select one of the following:

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.

Explanation

Question 6 of 166

1

One of main uses of the pneumatic system is:

Select one of the following:

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

Explanation

Question 7 of 166

1

According to the structure levels. Which level if fails ensures no catastrophic failure but limited
operations.

Select one of the following:

Primary
Secondary
Tertiary
Non of them

Explanation

Question 8 of 166

1

About the Anti-Icing system of the pitot set:

Select one of the following:

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.

Explanation

Question 9 of 166

1

Which of the following is not one of the rules that a pneumatic system must comply with?

Select one of the following:

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

Explanation

Question 10 of 166

1

Which structure is damage tolerant

Select one of the following:

Fail safe structure
Life safe structure
Jar 23 structure
Primary structure

Explanation

Question 11 of 166

1

Choose the incorrect option referred to the Electro Expulsive De-Icing System:

Select one of the following:

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.

Explanation

Question 12 of 166

1

What is the name of the aids to the vertical fly of the Harrier, which are situated on wingtips and use bleed air?

Select one of the following:

a) Puffers
b) Slots
c) Directional nozzle
d) This system doesn’t exist

Explanation

Question 13 of 166

1

Select the incorrect type of joints

Select one of the following:

Mechanical
Adhesive
Metals
Anodized

Explanation

Question 14 of 166

1

About the Anti-Ice systems:

Select one of the following:

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.

Explanation

Question 15 of 166

1

The pneumatic systems:

Select one of the following:

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

Explanation

Question 16 of 166

1

Which is not an advantage of composites

Select one of the following:

Ptfe
Gfrp
Cfrp
aramid

Explanation

Question 17 of 166

1

Choose the correct option:

Select one of the following:

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.

Explanation

Question 18 of 166

1

One of the advantages of the pneumatic system is:

Select one of the following:

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

Explanation

Question 19 of 166

1

Which is not an advantage of composites

Select one of the following:

Fatigue reduction
Weight
Properties
Maintenance

Explanation

Question 20 of 166

1

Choose the correct option:

Select one of the following:

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.

Explanation

Question 21 of 166

1

The bleed air comes from:

Select one of the following:

a) Engine compressor in jet engines
b) Turbocharges in no jet engines
c) Engine turbine in jet engines
d) a and b are true

Explanation

Question 22 of 166

1

The aluminium alloy most used in aviation is

Select one of the following:

70-75
60-65
40-45
30-35

Explanation

Question 23 of 166

1

Choose the incorrect option:

Select one of the following:

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.

Explanation

Question 24 of 166

1

The air bleeding from the engine:

Select one of the following:

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

Explanation

Question 25 of 166

1

The best aircraft shape for supersonic flight is made considering:

Select one of the following:

Smooth contours to minimize drag
Cylindrical shape to minimize drag
Area rule to minimize drag
Wingspan rule to maximize lift

Explanation

Question 26 of 166

1

Regarding the “Static Precipitation” phenomenon, it can be stated that:

Select one of the following:

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.

Explanation

Question 27 of 166

1

What is the structure that better resists the pressure?

Select one of the following:

Cylindrical
Square
Triangular
Sphere

Explanation

Question 28 of 166

1

When a Kreuger flap is actioned the curvature/geometry of the aerodynamic profile is modified, whereas with a Slat this does not occur:

Select one of the following:

True
False
False, the Kreuger flap does not change the curvature of the aerodynamic profile
False, with the Slat the same thing happens

Explanation

Question 29 of 166

1

The monocoque structure is usually used in:

Select one of the following:

Airlines aircrafts
Missiles
Military aircrafts
Light gliders

Explanation

Question 30 of 166

1

The most popular flap extension mechanism is:

Select one of the following:

Paddling
Articulated Rods
Rails
None of them

Explanation

Question 31 of 166

1

Semi-monocoque advantages over monocoque is:

Select one of the following:

Easyly to repair
Reduced weight
More tolerant to damage
All of the above

Explanation

Question 32 of 166

1

The main advantage of an hydraulic system over an electrical system for the extension of the landing gear/flaps is

Select one of the following:

Less cost
It provides a faster actuation
It provides a greater force
Less weight

Explanation

Question 33 of 166

1

Torsion is suported by:

Select one of the following:

Skin
Stringers
Formers
All of the above, which is called torsion box

Explanation

Question 34 of 166

1

The main problem that the first analog Fly-By-Wire had was:

Select one of the following:

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

Explanation

Question 35 of 166

1

All the passengers must leave the aircraft with 50% operative doors in:

Select one of the following:

30 seconds
90 seconds
Two minutes
Three minutes

Explanation

Question 36 of 166

1

Power By Wire (FBW) works with a ________ electrical system

Select one of the following:

Single phase (monophasic)
Two phase (bifasic)
Three phase
None of them

Explanation

Question 37 of 166

1

Spars, ribs, stringers and skin are:

Select one of the following:

Structural elements
Engine elements
Electric elements
Fire protection elements

Explanation

Question 38 of 166

1

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.

Select one of the following:

True
False
False, the IAP does not have an actuator
False, the PBW does not have an electric motor.

Explanation

Question 39 of 166

1

Braced monoplaces are used for

Select one of the following:

High-speed aircrafts
Low-speed aircrafts
Supersonic aircrafts
Acrobatic aircrafts

Explanation

Question 40 of 166

1

The Electro-mechanical Actuator (EMA) has not yet been tested on primary controls of an aeroplane:

Select one of the following:

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

Explanation

Question 41 of 166

1

What can be considered such as the main advantage of biplane aircraft?

Select one of the following:

Double lift
Easiest production
Esthetical reasons
Structural strengths

Explanation

Question 42 of 166

1

The wing mounted landing gear is attached to:

Select one of the following:

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

Explanation

Question 43 of 166

1

The wing mounted landing gear is attached to:

Select one of the following:

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

Explanation

Question 44 of 166

1

Cables in biplane aircraft were interesting because:

Select one of the following:

Compression efforts
Tension efforts
Both compression and torsion.
The main advantage was drag reduction

Explanation

Question 45 of 166

1

In general, cantilevered wings require a rigidization that consist of:

Select one of the following:

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

Explanation

Question 46 of 166

1

In general, cantilevered wings require a rigidization that consist of:

Select one of the following:

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

Explanation

Question 47 of 166

1

Which efforts were responsible of excessive angle of attack accidents:

Select one of the following:

Compression
Tension
Torsion
G forces

Explanation

Question 48 of 166

1

One advantage of low wing is:

Select one of the following:

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

Explanation

Question 49 of 166

1

One advantage of low wing is:

Select one of the following:

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

Explanation

Question 50 of 166

1

The internal force within the structure that opposes the external force is:

Select one of the following:

Buckling
Strain
Stress
Strain or stress indifferently

Explanation

Question 51 of 166

1

One advantage of high wing:

Select one of the following:

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

Explanation

Question 52 of 166

1

One advantage of high wing:

Select one of the following:

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

Explanation

Question 53 of 166

1

Buckling effect appears due to ______ efforts:

Select one of the following:

Buckling
Compression
Tension
Torsion

Explanation

Question 54 of 166

1

One disadvantage of high wing is:

Select one of the following:

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

Explanation

Question 55 of 166

1

One disadvantage of high wing is:

Select one of the following:

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

Explanation

Question 56 of 166

1

Which of that reduces buckling effect:

Select one of the following:

Thinner coating
Thicker coating
More distance between anchor points
It is specific and fix for each material

Explanation

Question 57 of 166

1

The element used to attach the engine to the wing is called

Select one of the following:

a. Pylon
b. Spar
c. Formeron
d. Rib

Explanation

Question 58 of 166

1

The element used to attach the engine to the wing is called

Select one of the following:

a. Pylon
b. Spar
c. Formeron
d. Rib

Explanation

Question 59 of 166

1

Which could be a good reaction to stop buckling effect:

Select one of the following:

Do not touch aerodynamic controls
Climb or descent immediately
Increase or reduce speed
Turn 90 degrees left or right

Explanation

Question 60 of 166

1

Comparing the tailplane structure with a wing´s one:

Select one of the following:

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

Explanation

Question 61 of 166

1

Comparing the tailplane structure with a wing´s one:

Select one of the following:

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

Explanation

Question 62 of 166

1

What is not considered such as a function of the airframe:

Select one of the following:

Protect passengers and payload
Resist applied loads
Provides thrust to the aircraft
Defines aerodynamic shape

Explanation

Question 63 of 166

1

Most fighter planes tailplanes are categorized as:

Select one of the following:

a. Conventional
b. T-tail
c. Twin tail
d. H-tail

Explanation

Question 64 of 166

1

Most fighter planes tailplanes are categorized as:

Select one of the following:

a. Conventional
b. T-tail
c. Twin tail
d. H-tail

Explanation

Question 65 of 166

1

C-101 landing gear has the following configuration

Select one of the following:

Tricycle.
Quadricycle
Bicycle
Multi-bogey.

Explanation

Question 66 of 166

1

1. Choose the incorrect answer. The advantages of HYDR.SYSTEMS are:

Select one of the following:

a. Self-Lubricant System
b. Easy instalation
c. Low cost
d. Useful for small forces

Explanation

Question 67 of 166

1

El tipo de llanta más utilizada en las aeronaves es:

Select one of the following:

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.

Explanation

Question 68 of 166

1

2. Choose the incorrect HYDRAULIC vs PNEUMATIC:

Select one of the following:

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)

Explanation

Question 69 of 166

1

Most used tyres in aeronautical are:

Select one of the following:

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

Explanation

Question 70 of 166

1

3. Desired properties, choose the incorrect:

Select one of the following:

a. Low viscosity
b. High viscosity
c. Resistance to heat
d. Good lubricant properties

Explanation

Question 71 of 166

1

Drawing used in tyres most commonly is:

Select one of the following:

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

Explanation

Question 72 of 166

1

4. Types of HYD fluids:

Select one of the following:

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

Explanation

Question 73 of 166

1

Aquaplaning or hydroplanning occurs in aeronautical when:

Select one of the following:

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

Explanation

Question 74 of 166

1

5. Basic elements of hydraulic systems are, choose the incorrect:

Select one of the following:

a. Reservoir
b. Pump
c. Selector Valve
d. Triple Acting clylinder

Explanation

Question 75 of 166

1

aeroplanes have different kind of control surfaces

Select one of the following:

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

Explanation

Question 76 of 166

1

6. Nowadays typical HYD pessures are:

Select one of the following:

a. 3000-4000 psi
b. 200-100 psi
c. 15000-25000 psi
d. 1000-10000 psi

Explanation

Question 77 of 166

1

controls in present aeroplanes, manufactured from the 90s, are:

Select one of the following:

By Fly-by-wire technology
with cables and pulleys
by power-by-wire technology
None of above

Explanation

Question 78 of 166

1

7. Linear actuartors = jacks

Select one of the following:

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

Explanation

Question 79 of 166

1

En determinados aviones, se utilizan unos alerones también para obtener efectos hipersustentadores. Estos reciben el nombre de:

Select one of the following:

Alerones.
Flaps.
Flaperones.
Ninguna de las anteriores.

Explanation

Question 80 of 166

1

8. Selectors or flow control devices, choose the incorrect:

Select one of the following:

a. Rotary selectors
b. Linear or spool valve selectors
c. Electrical locks
d. Non-return valves (NRV)

Explanation

Question 81 of 166

1

FBL means:

Select one of the following:

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

Explanation

Question 82 of 166

1

Las siglas EAP se corresponden con

Select one of the following:

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

Explanation

Question 83 of 166

1

El sistema FBL tiene entre sus ventajas

Select one of the following:

Es un sistema muy utilizado y desarrollado
Evita las interferencias electromagnéticas
Es más estético
Evita el uso de superficies de vuelo

Explanation

Question 84 of 166

1

Durante la WWII los sistemas anti-hielo incluían

Select one of the following:

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

Explanation

Question 85 of 166

1

El coeficiente de resistencia de un ala con hielo

Select one of the following:

Disminuye siempre
Aumenta
No afecta a la performance
El hielo no puede adherirse al ala en vuelo

Explanation

Question 86 of 166

1

Los sistemas anti-hielo

Select one of the following:

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

Explanation

Question 87 of 166

1

Los sistemas “de-ice”

Select one of the following:

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

Explanation

Question 88 of 166

1

El comandante de la aeronave

Select one of the following:

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

Explanation

Question 89 of 166

1

Which one of the following elements is not part of a liquid springs damping system in a landing gear?

Select one of the following:

a. Piston
b. Cylinder with silicon-based fluid
c. Gland
d. Tire

Explanation

Question 90 of 166

1

Oleo-pneumatic shock absorbers in landing gears

Select one of the following:

a. Are obsolete
b. Use oil and gas
c. Use a silicon-based fluid and gas
d. Only use a silicon-based fluid

Explanation

Question 91 of 166

1

The main function of torque links is to

Select one of the following:

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

Explanation

Question 92 of 166

1

The tail wheel in a conventional landing gear

Select one of the following:

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

Explanation

Question 93 of 166

1

Which one from the following is a type of wheel steering system?

Select one of the following:

a. Banana
b. Banana with movable rod
c. Linear with movable rod
d. All the above are correct

Explanation

Question 94 of 166

1

Regulations demand landing gears not to experiment shimmy until

Select one of the following:

a. 0,5 · Vstall
b. 1,3 · Vstall
c. 100 knots
d. 200 knots

Explanation

Question 95 of 166

1

Hop dumpers

Select one of the following:

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

Explanation

Question 96 of 166

1

Which of the following is a disadvantage of retractable gear housing in the wing?

Select one of the following:

a. Creation of additional aerodynamic drag
b. Loss of cargo volume
c. Loss of fuel space
d. There are not disadvantages

Explanation

Question 97 of 166

1

The disadvantage of liquid air cooling systems is:

Select one of the following:

a) They are expensive
b) They are toxic
c) They need a special seal
d) All are correct

Explanation

Question 98 of 166

1

The classic cabin temperature control system is carried out by:

Select one of the following:

a) The Martin Bridge
b) The Control Bridge
c) The Temperature Bridge
d) The Wheatstone Bridge

Explanation

Question 99 of 166

1

It is difficult to control the humidity of the air cooling system because:

Select one of the following:

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

Explanation

Question 100 of 166

1

Refering to the air cabin distribution in a transport plane, air velocities must be:

Select one of the following:

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

Explanation

Question 101 of 166

1

The maximum safe altitude for pilots without oxygen in

Select one of the following:

a) 15000 ft
b) 20000 ft
c) 25000 ft
d) 21000 ft

Explanation

Question 102 of 166

1

According to the regulation of JAR 23 and JAR25, the maximum cabin altitude for passengers is:

Select one of the following:

a) 7000 ft
b) 6000 ft
c) 10000 ft
d) 8000 ft

Explanation

Question 103 of 166

1

Types of cabin pressure control systems:

Select one of the following:

a) Pneumatic
b) Electro – pneumatic
c) Electronic
d) All are correct

Explanation

Question 104 of 166

1

In which decompression level does the equalize to ambient pressure occur between 0 and 4 seconds?

Select one of the following:

a) Rapid decompression
b) Normal decompression
c) Explosive decompression
d) Slow decompression

Explanation

Question 105 of 166

1

Which of the next instruments must be on any aircraft obligatorily :

Select one of the following:

Thermomether
Clock
Altimeter
All of the above

Explanation

Question 106 of 166

1

The organization with legal regulatory authority within the EU is:

Select one of the following:

EASA
JAA
FAA
None of the above

Explanation

Question 107 of 166

1

The time that a plane is allowed to fly with one engine inoperative is called:

Select one of the following:

Single-engine range
ICAO
ETOPS
AAJMG

Explanation

Question 108 of 166

1

Which one is not an air data instrument:

Select one of the following:

Machmeter
Vertical speed indicator
Altimeter
Turn indicator

Explanation

Question 109 of 166

1

The RAM effect:

Select one of the following:

Decreases air temperature
Increases air temperature
Can increase or decrease air temperature
Does not affect air temperature

Explanation

Question 110 of 166

1

Which of the following thermometers is not usually used in aviation:

Select one of the following:

Mercury thermometer
Thermistors
Thermocouples
Optical pyrometers

Explanation

Question 111 of 166

1

Which is the minimum ETOPS to be allowed to cross the Atlantic:

Select one of the following:

60 min ETOPS
120 min ETOPS
180 min ETOPS
370 min ETOPS

Explanation

Question 112 of 166

1

Which is the instrument arrangement used in the C101:

Select one of the following:

6 grouping
T grouping
It uses difgial displays
None of the above

Explanation

Question 113 of 166

1

Solar Heating

Select one of the following:

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

Explanation

Question 114 of 166

1

Airframe system heat loads such as ECS, Engine, and Hydraulic, Fuel or Electric systems can produce heat.

Select one of the following:

a) True
b) False

Explanation

Question 115 of 166

1

International standard atmosphere changes affects more significatly:

Select one of the following:

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

Explanation

Question 116 of 166

1

In general terms:

Select one of the following:

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

Explanation

Question 117 of 166

1

Generally, aircraft flying in high Mach numbers

Select one of the following:

a) Need cooling
b) Need heating
c) Both are true depending on the season
d) Both are false

Explanation

Question 118 of 166

1

Some cooling systems are:

Select one of the following:

a) Air cycle machines
b) Vapor cycle machines
c) The fridge machine
d) A and B are correct

Explanation

Question 119 of 166

1

Some heating systems are:

Select one of the following:

a) Hot air
b) Electrical heater
c) Combustion heater
d) All above are correct

Explanation

Question 120 of 166

1

Select the correct sentence:

Select one of the following:

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

Explanation

Question 121 of 166

1

Some fighter jets use this system to change pitch and roll:

Select one of the following:

Flaps
Slats
Elevons
Spoilers

Explanation

Question 122 of 166

1

This plane use “canards” as flight control system:

Select one of the following:

C295
Eurofighter
C101
Super Puma

Explanation

Question 123 of 166

1

Cable operated control system:

Select one of the following:

Use electric pulses
Need hydraulic fluid to move control surfaces
Pilot must generate all the force to move the control surfaces
All are correct

Explanation

Question 124 of 166

1

In a hydraulic system, the PCU (Power Control Units):

Select one of the following:

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

Explanation

Question 125 of 166

1

Hydraulic power assist systems:

Select one of the following:

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

Explanation

Question 126 of 166

1

“Yoke” as joystick is frequent in:

Select one of the following:

Gliders
Commercial airplanes
Helicopters
Autogyros

Explanation

Question 127 of 166

1

Related to fuel system architecture:

Select one of the following:

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

Explanation

Question 128 of 166

1

Where are fuel tanks normally located?

Select one of the following:

a. Fuselage
b. Wings
c. Vertical Stabilizer
d. a and b are true

Explanation

Question 129 of 166

1

What type of tank has problems with leakage and punctions?

Select one of the following:

Rigid tanks
Flexible tanks
Integral tanks
None of the above

Explanation

Question 130 of 166

1

Related to Flame arrestors:

Select one of the following:

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

Explanation

Question 131 of 166

1

Related to Fuel Booster Pumps:

Select one of the following:

Prevent aeration
Avoid cavitation
Electrically driven
All of the above

Explanation

Question 132 of 166

1

What are the different types of level sensors?

Select one of the following:

Float, Zener Diode, Capacitance, Ultrasonic, Optical
Float, Zener Diode, Capacitance, Ultrasonic
Float, Led Diode, Capacitance, Ultrasonic, Optical
Float, Capacitance, Ultrasonic, Optical

Explanation

Question 133 of 166

1

What is FOB?

Select one of the following:

Fuel On Booster
Fuel On Board
Fuel On Body
None of the above

Explanation

Question 134 of 166

1

Related to Fuel Jettison:

Select one of the following:

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

Explanation

Question 135 of 166

1

In a hydraulic system, the redundancy consist in

Select one of the following:

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.

Explanation

Question 136 of 166

1

Linear actuators installed on control surfaces are characterized by:

Select one of the following:

A) Give a rapid response
B) Support reasonably light aerodynamic loads
C) Both A and B are correct
D) Support large aerodynamic loads

Explanation

Question 137 of 166

1

Some advantages of electrical power assist (or power boost) systems are:

Select one of the following:

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.

Explanation

Question 138 of 166

1

Regarding to the stick force gradient...

Select one of the following:

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.

Explanation

Question 139 of 166

1

About the aerodynamic balancing/trim:

Select one of the following:

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

Explanation

Question 140 of 166

1

Choose the correct option with regar to "tabs"

Select one of the following:

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.

Explanation

Question 141 of 166

1

About anti-tab

Select one of the following:

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

Explanation

Question 142 of 166

1

Regarding to Spring Servo Tab...

Select one of the following:

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

Explanation

Question 143 of 166

1

1. Which are the main variations of the four bars mechanism employed in retractable gears?

Select one of the following:

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.

Explanation

Question 144 of 166

1

The mechanism that change the angle between the gear leg and the wheel axis when the gear is retracted is known as:

Select one of the following:

A. Rotator or planing link mechanism.
B. Type A2.
C. Type B.
D. None of the above.

Explanation

Question 145 of 166

1

Which are the main characteristics of the rotator or planing link mechanism?

Select one of the following:

A. Increase of weight.
B. Increase of complexity
C. Increase of maintenance.
D. All the above.

Explanation

Question 146 of 166

1

The most employed indicator of the gear placed in down and locked position is:

Select one of the following:

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.

Explanation

Question 147 of 166

1

Standard braking systems mainly work thanks to the conversion of aircraft’s forward motion into:

Select one of the following:

A. Heat energy.
B. Electric energy.
C. Magnetic energy.
D. Electromagnetic energy.

Explanation

Question 148 of 166

1

Braking systems are usually actuated though:

Select one of the following:

A. Electric power.
B. A steel cable connected to the cockpit.
C. Hydraulic systems.
D. The own aircraft’s weigh once it touches down.

Explanation

Question 149 of 166

1

Within a multi-disc braking system there are:

Select one of the following:

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)

Explanation

Question 150 of 166

1

When does the Anti-Skid system act?

Select one of the following:

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.

Explanation

Question 151 of 166

1

Which of these answers is NOT a classification of landing gears?

Select one of the following:

Single main
Tricycle
Taildragger
Double wheel

Explanation

Question 152 of 166

1

The functions and requirements of the landing gear are:

Select one of the following:

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

Explanation

Question 153 of 166

1

What is the disadvantage of taildragger?

Select one of the following:

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

Explanation

Question 154 of 166

1

Track (vía) = Distance between the center of the treads of the main gears. If there are more than 2:

Select one of the following:

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

Explanation

Question 155 of 166

1

The center of gravity of an airplane with tricycle configuration:

Select one of the following:

It is behind the main gear
It is in front of the main gear
It is indifferent
It depends on the plane

Explanation

Question 156 of 166

1

The gear in pods configuration is used in:

Select one of the following:

Fighter aircraft
Cargo airplanes
Passenger airplanes
That configuration does not exist

Explanation

Question 157 of 166

1

The extension and retraction of the landing gear can be:

Select one of the following:

Electric
Hydraulic
Pneumatic
All answers above are correct

Explanation

Question 158 of 166

1

Factors in landing are:

Select one of the following:

a) Mass
b) Vertical velocity at touch down
c) Horizontal velocity at touch down
d) All above are correct

Explanation

Question 159 of 166

1

What is the civil regulation that regulates the anti-icing on land?

Select one of the following:

JAR 23/25
RCAO
Law 5/2005
IG-004

Explanation

Question 160 of 166

1

In ground, what areas of the plane should be paid attention for ice?

Select one of the following:

The tires and wheels.
The windows of the cabin
The pitot tube
The control mobile surfaces, and their union with the fixed surfaces.

Explanation

Question 161 of 166

1

Where is hot air taken out in a reactor to inflate the pneumatic boots anti-icing system?

Select one of the following:

Compressor air
Pitot tube and static socket
Vacuum pump
Of the leading edge.

Explanation

Question 162 of 166

1

	Created by 72 promocion over 4 years ago

Quiz on Avionica UD1&2, created by 72 promocion on 11/05/2020.

Avionica UD1&2

Question 1 of 166

Which of the following loads of the gear is the biggest one

Select one of the following:

Explanation

Question 2 of 166

What is the bleeding system that is used on fighter aircrafts?

Select one of the following:

Explanation

Question 3 of 166

The Kreuger flap is placed at:

Select one of the following:

Explanation

Question 4 of 166

Factor affecting the fatigue

Select one of the following:

Explanation

Question 5 of 166

Choose the more correct option about these De-Icing system types:

Select one of the following:

Explanation

Question 6 of 166

One of main uses of the pneumatic system is:

Select one of the following:

Explanation

Question 7 of 166

According to the structure levels. Which level if fails ensures no catastrophic failure but limited operations.

Select one of the following:

Explanation

Question 8 of 166

About the Anti-Icing system of the pitot set:

Select one of the following:

Explanation

Question 9 of 166

Which of the following is not one of the rules that a pneumatic system must comply with?

Select one of the following:

Explanation

Question 10 of 166

Which structure is damage tolerant

Select one of the following:

Explanation

Question 11 of 166

Choose the incorrect option referred to the Electro Expulsive De-Icing System:

Select one of the following:

Explanation

Question 12 of 166

What is the name of the aids to the vertical fly of the Harrier, which are situated on wingtips and use bleed air?

Select one of the following:

Explanation

Question 13 of 166

Select the incorrect type of joints

Select one of the following:

Explanation

Question 14 of 166

About the Anti-Ice systems:

Select one of the following:

Explanation

Question 15 of 166

The pneumatic systems:

Select one of the following:

Explanation

Question 16 of 166

Which is not an advantage of composites

Select one of the following:

Explanation

Question 17 of 166

Choose the correct option:

Select one of the following:

Explanation

Question 18 of 166

One of the advantages of the pneumatic system is:

Select one of the following:

Explanation

Question 19 of 166

Which is not an advantage of composites

Select one of the following:

Explanation

Question 20 of 166

Choose the correct option:

According to the structure levels. Which level if fails ensures no catastrophic failure but limited
operations.