Quiz
Sistemas
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Questions in this quiz (200)
1As a subsonic aircraft speeds-up, its Centre of Pressure.
- Amoves forward.
- Bmoves aft.
- Cis unaffected
2Wing spoilers, when used asymmetrically, are associated with.
- Aailerons.
- Brudder.
- Celevators
3If an aircraft is yawing to the left, where would you position the trim tab on the rudder?.
- ATo the centre.
- BTo the right.
- CTo the left.
4 If an aircraft is flying with a left wing low, where would you move the left aileron trim tab?.
- ADown.
- BUp.
- CMoving the aileron trim tab will not correct the situation
5When a leading edge flap is fully extended, what is the slot in the wing for?.
- ATo allow the flap to retract into it when it retracts.
- BTo re-energise the boundary layer.
- CTo increase the lift
6With respect to differential aileron control, which of the following is true?.
- AThe up going Aileron moves through a smaller angle than the down going aileron.
- BThe up going and down going ailerons both deflect to the same angle.
- CThe down going aileron moves through a smaller angle than the up going aileron.
7The aeroplane fin is of symmetrical aerofoil section and will therefore provide a side-load.
- Aif a suitable angle of attack develops due either yaw or rudder movement.
- Bonly if a suitable angle of attack develops due to yaw.
- Conly when the rudder is moved.
8An aircraft left wing is flying low. The aileron trimmer control to the left aileron trim tab in the cockpit would be.
- Amoved up causing the left aileron to move up.
- Bmoved up causing the left aileron to move down.
- Cmoved down causing the left aileron to move down.
9The purpose of a slot in a wing is to.
- Aspeed up the airflow and increase lift.
- Bact as venturi, accelerate the air and re-energise boundary layer.
- Cprovide housing for the slat.
10Large flap deployment.
- Ahas no effect on spanwise flow.
- Bcauses increased spanwise flow towards tips on wing upper surface.
- Ccauses increased spanwise flow towards tips on wing lower surface
11Which part of the wing of a swept-wing aircraft stalls first?.
- ATip stalls first.
- BRoot stalls first.
- CBoth stall together.
12During flight, an aircraft is yawing to the right. The aircraft would have a tendency to fly.
- Aright wing low.
- Bnose up.
- Cleft wing low.
13With a drop in ambient temperature, an aircraft service ceiling will.
- Anot be affected.
- Blower.
- Crise.
14 Extending a leading edge slat will have what effect on the angle of attack of a wing?.
- AIncrease the angle of attack.
- BDecrease the angle of attack.
- CNo effect on angle of attack.
15 To ensure that a wing stalls at the root first, stall wedges are.
- Ainstalled at the wing trailing edge at the wing root.
- Binstalled at the wing trailing edge at the wing root A
- Cinstalled on the wing leading edge at the wing root.
16With reference to differential aileron control.
- Adrag increases on the inner wing.
- Bdrag decreases on the outer wing.
- Cdrag increases on the outer wing.
17Dutch role is movement in.
- Ayaw and roll.
- Byaw and pitch.
- Cpitch and roll.
18If an aircraft is aerodynamically stable.
- Aaircraft becomes too sensitive.
- Baircraft returns to trimmed attitude.
- CC of P moves back.
19Ailerons control the aircraft in the.
- Alongitudinal plane.
- Bdirectional plane.
- Clateral plane
20An anti-balance tab is used.
- Afor trimming the aircraft.
- Bto give more feel to the controls.
- Cto relieve stick loads.
21Slats.
- Aact as an air brake.
- Bkeep the boundary layer from separating for longer.
- Cincrease the overall surface area and lift effect of wing.
22Due to the change of lift forces resulting from the extension of flaps in flight.
- Anose should be lowered, reducing AoA.
- Bnose should remain in the same position, maintaining same AoA.
- Cnose should be raised, increasing AoA.
23Flight spoilers.
- Acan be used to decrease lift to allow controlled decent without reduction of airspeed.
- Bcan be deployed on the down going wing in a turn to increase lift on that wing.
- Ccan be used with differential ailerons to reduce adverse yaw in a turn.
24If the aircraft is flying nose heavy, which direction would you move the elevator trim tab?.
- AUp to move elevator up.
- BDown to move elevator up.
- CUp to move elevator down.
25Wing tip vortices are strongest when.
- Aflying high speed straight and level flight.
- Bflying slowly at high angles of attack.
- Cflying into a headwind
26An example of a secondary flight control is a.
- Aelevator.
- Bflap.
- Cspoiler.
27A balance tab.
- Aassists the pilot to move the controls.
- Bis used to trim the appropriate axis of the aircraft.
- Ceffectively increases the area of the control surface
28Which wing increases drag when the ailerons are moved?.
- ABoth wings have an equal increase in drag.
- BBoth wings increase drag but the wing with the down-going aileron increases more.
- CBoth wings increase drag but the wing with the up-going aileron increases more.
29Which flap will increase wing area and camber?.
- ASplit.
- BSlot.
- CFowler.
30An automatic slat will lift by itself when the angle of attack is.
- Alow.
- Bhigh or low.
- Chigh
31On aircraft fitted with spoilers for lateral control, roll to the right is caused by.
- Aleft and right spoilers extending.
- Bright spoilers extending, left spoilers remaining retracted.
- Cleft spoilers extending, right spoilers remaining retracted
32 A split flap increases lift by increasing.
- Athe surface area.
- Bthe camber of the top surface.
- Cthe angle of attachment of the lower hinged portion
33When the trailing edge flaps are lowered, the aircraft will.
- Asink.
- Bpitch nose down.
- Cpitch nose up.
34Dutch roll is.
- Aa type of slow roll.
- Bprimarily a pitching instability.
- Ca combined yawing and rolling motion.
35On an aircraft with an all-moving tailplane, pitch up is caused by.
- Aincreasing tailplane incidence.
- Bdecreasing tailplane incidence.
- Cup movement of the elevator trim tab
36 A leading edge slat is a device for.
.- Aincreasing the stalling angle of the wing.
- Bdecreasing wing drag.
- Cdecreasing the stalling angle of the wing
37A Krueger flap is.
- Aa leading edge slat which extends forward.
- Ba flap which extends rearwards but does not lower.
- Ca leading edge flap which hinges forward
38The layer of air over the surface of an aerofoil which is slower moving, in relation to the rest of the airflow, is known as.
- Acamber layer.
- Bnone of the above are correct.
- Cboundary layer
39When airflow velocity over an upper cambered surface of an aerofoil decreases, what takes place?.
- APressure increases, lift decreases.
- BPressure decreases, lift increases.
- CPressure increases, lift increases.
40 What is a controlling factor of turbulence and skin friction?.
- ACountersunk rivets used on skin exterior.
- BAspect ratio.
- CFineness ratio.
41Changes in aircraft weight.
- Awill only affect total drag if the lift is kept constant.
- Bwill not affect total drag since it is dependant only upon speed.
- Ccause corresponding changes in total drag due to the associated lift change.
42When an aircraft stalls.
- Alift decreases and drag increases.
- Blift and drag increase.
- Clift and drag increase.
43The aircraft stalling speed will.
.- Aincrease with an increase in weight.
- BOption B. increase with an increase in weight.
- Cbe unaffected by aircraft weight changes since it is dependant upon the angle of attack
44In a bank and turn.
- Aextra lift is not required.
- Bextra lift is required.
- Cextra lift is not required if thrust is increased
45The angle of attack at which stall occurs.
- Adepends on the weight of the aircraft.
- Bcannot be varied, it is always constant.
- Ccan be varied by using flaps and slats.
46The primary function of a flap is.
- Ato alter the position of the centre of gravity.
- Bto trim the aircraft longitudinally.
- Cto alter the lift of an aerofoil.
47The stalling speed of an aircraft.
- Ais increased when it is lighter.
- Bdoes not change.
- Cis increased when it is heavier
48A wing flap which has dropped or partially extended on one wing in flight will lead to.
- Aa steady rolling tendency which would be corrected by use of the ailerons.
- Ba fixed banked attitude which would be corrected by use of the rudder.
- Ca pitching moment which would be corrected by used of the elevators.
49With an increase in the amount of flap deployment, the stalling angle of a wing.
- Aincreases.
- Bremains the same.
- Cdecreases
50Downward displacement of an aileron.
- Adecreases the angle at which its wing will stall.
- Bincreases the angle at which its wing stalls.
- Chas no effect on its wing stalling angle, it only affects the stalling speed on that wing
51Due to the tailplane angle of attack change, the flap-induced downwash on the tailplane.
- Amay cause a nose-down or nose-up pitch depending upon the initial tailplane load.
- Bwill tend to cause an aircraft nose down pitch.
- Cwill tend to cause an aircraft nose-up pitch.
52Due to the change in lift coefficient accompanying extension of the flaps, to maintain the lift constant it would be necessary to.
- Alower the nose.
- Bkeep the pitch attitude constant.
- Craise the nose
53Which leading edge device improves the laminar flow over the wing?.
- AFlap and slat.
- BFlap.
- CSlat.
54The tropopause exists at about.
- A18,000 ft.
- B36,000 ft.
- C30,000 ft.
55Induced drag curve characteristics of a slender delta wing are such that there is.
- Aan increase in gradient with wing speed.
- Bdecrease in gradient with wing speed.
- Cno change in gradient with wing speed
56If an aircraft is yawing left, the trim tab on the rudder would be positioned.
- Ato the left, moving the rudder right.
- Bto the centre.
- Cto the right, moving the rudder left
57Instability giving roll and yaw.
- Ais longitudinal stability.
- Bis lateral stability.
- Cis dutch roll
58Vortex generators are fitted to.
- Amove transition point forwards.
- Bmove transition point rearwards.
- Cadvance the onset of flow separation.
59Leading edge flaps.
- Adecrease stalling angle of the wing.
- Bdo not change the stalling angle.
- Cincrease stalling angle of the wing.
60Krueger flaps are on.
- Athe leading edge.
- Bthe trailing edge.
- Ceither the leading or training edge.
61Sweepback will.
- Aincrease lateral stability.
- Bnot affect lateral stability.
- Cdecrease lateral stability.
62A plain flap.
- Ais attached to the leading edge of the wing.
- Bforms part of lower trailing edge.
- Cdoes not increase the wing area on deployment
63A split flap, when deployed.
- Aincreases drag with little lift coefficient increase, from intermediate to fully down.
- Bis used only on high speed aircraft.
- Cincreases lift without a corresponding increase in drag.
64Zone 320 under the ATA system is.
- Acentral fuselage.
- Bvertical stabiliser.
- Chorizontal stabiliser.
65When doing a bonding check the maximum resistance between component and earth is.
- A0.005ohms.
- B1/50 ohms.
- C50 milliohms.
66How is damage to the nose cone of an aircraft prevented during a lightning strike?.
- AEarthing Strap.
- BBonding Strip.
- COption B. Bonding Strip.
67Tension is the stress of.
- Acrush or compression.
- Belongating or stretch.
- Ctwisting.
68 A Fuselage Station is a.
- Alateral point on aircraft wing.
- Blateral point on aircraft fuse.
- Clongitudinal point on the aircraft fuselage
69Composite materials are bonded by.
- Aaluminium wire.
- Bspecial paint.
- Ccopper wire.
70ATA Zone 100 is.
- Aupper fuselage.
- Blower fuselage.
- CWing
71The bonding lead to a remote aircraft component must be.
- A0.5 in wide.
- B22 AWG.
- C0.25 in wide and 22 AWG
72at force is an I-Beam subjected to?.
- ATension.
- BBending.
- CShear
73A radome is protected from static electricity build-up by.
- Abonding strips.
- Bspecial conductive grease.
- Cconductive paint.
74Precise points are located on an aircraft by a system of.
- Aframe stations, vertical lines and lateral lines.
- Blongitudinal, vertical and lateral lines.
- Cframe stations, water lines and buttock lines
75Which of the following is an example of a fail safe structure?.
- ASpar.
- BLongeron.
- CStringer.
76Damage tolerant design.
- Ais applied only to secondary structure.
- Ballows for certain damage to the structure to go un-repaired between scheduled maintenance.
- Callows for damage to structure by distributing loads to other structure.
77In the ATA 100 zonal system the passenger entry door will have a designation of.
- A800.
- B600.
- C400
78Which area of the aircraft is subject to hoop stress?.
- AControl surfaces.
- BPressure cabin.
- CWings
79Shear stress is described as.
- Apulling forces.
- Bcompressing forces.
- Cslip away under the action of forces
80The ground cable must be.
- Asingle strand copper wire 0.5 in. cross sectional area.
- Bcopper stranded 0.5 in. cross sectional area.
- Csingle strand 18 AWG
81Where on the aircraft is FS245, RWS45?.
- A245 inches from the nose of the aircraft and 45 inches from the tip of the right wing.
- B245 inches from the datum line of the aircraft and 45 inches from the centreline of the right wing.
- C245 inches from the nose of the aircraft and 45 inches from the centreline of the right wing.
82How is the radome protected from lightning strike?.
- ASpecial grease on the hinges.
- BDiverter strips.
- CSpecial paint.
83If you short the two prongs with the single prong of a bonding tester together, what would the gauge read?.
- AFull scale deflection.
- BCentre scale.
- CZero
84A condition after which a permanent deformation of a material is caused, is known as.
- Astrain.
- Bshear.
- Cshear
85Semi-monocoque construction.
- Autilizes the safe-life design concept.
- Bis used only for the fuselage.
- Coffers good damage resistance
86Most radio aerials are.
- Anot bonded.
- Bbonded.
- Cinsulated from the fuselage
87Secondary bonding is usually provided with.
- Astranded copper 0.25 inch.
- Bsingle strand 0.25 inch.
- C18 AWG
88Water Lines (WLs) are measured points on a.
- Avertical line.
- Bwing line.
- Chorizontal line.
89The various parts of the aircraft airframe are maintained at the same potential by.
- Abonding.
- Bearthing.
- Cstatic wicks.
90The cross sectional area of a secondary conductor must be not less than.
- A18 SWG for a single wire.
- B22 SWG x 0.25.
- C22 SWG x 0.5.
91What governs the ultimate fatigue life of an aircraft?.
- APressure Cycles.
- BFlying Hours.
- CLandings.
92The main forces on an aircraft structure are.
- A tension, compression, torsion and shear.
- Btension, compression, torsion and strain.
- Ctension, compression, twisting and shear
93The life of the structure is counted by.
- Alandings.
- Bpressurization cycle.
- C flying hours.
94What are buttock lines?.
- AMeasurements from the centre line.
- BHorizontal measurement lines.
- CVertical measurement lines
95Aircraft fibreglass panels are protected against lighting strikes, partially by.
- Anon-conductive paint.
- Bbonding.
- Cconductive paint
96A member taking a compression load is called a.
- Abeam.
- Bcable.
- Cstrut.
97Stringers are used in which of the following types of aircraft fuselage construction?.
- ASemi-monocoque.
- BTruss type.
- CMonocoque.
98Wing stations are measured.
- Aoutboard from the wing root.
- Boutboard from the fuselage centreline.
- Cinboard from the wing upper surface
99What load is a tie rod designed to accept?.
- ABending.
- BTensile.
- CTorsion.
100 If a colour is used to identify primary structure, it will be.
- Ared.
- Bgreen.
- Cyellow.
101Which of the following is primary structure?.
- AFrame.
- BSkin.
- CStringer.
102Fuselage station numbers are measured from the front of the aircraft in.
- Afeet.
- Binches.
- Cfeet and inches
103Which parts of the aircraft are classified secondary structures?.
- AThese parts of the airframe are highly stressed but if damaged will not cause failure of the aircraft.
- BThese parts of the airframe are highly stressed and if damaged may cause failure of the aircraft and loss of life.
- CThese are lightly stressed parts such as fairings, wheel shields and minor component brackets etc
104Structure with built in redundancy is called.
- Adouble safe.
- Bfailsafe.
- Csafe life.
105Stress.
- Ais the property of a material to resist fracture.
- Bis the load per unit area acting on a material.
- Cis the deformation of a material caused by applied load
106A piece of structure which must be replaced at a specified number of cycles, flying hours or years, regardless of its physical condition is what type of item?.
- ASafe-life.
- BFail-safe.
- CCondition monitored
107If you are unable to identify a structure classification as either Primary or Secondary, what action should you adopt?.
- AUpgrade it to primary.
- BGrade it as secondary.
- CPaint it red and stamp it as tertiary
108Safe-life is.
- Athe sharing of loads between adjacent members.
- Bthe minimum number of flying hours that should elapse before a major structural failure occurs.
- Cthe maximum number of flying hours that should elapse before a major structural failure occurs.
109Bending stresses are a combination of.
- Atorsional and compression stresses.
- Btension and shear stresses.
- Ctension and compression stresses
110The Airworthiness Notice that refers to structural surveys is.
- ANotice 65.
- BNotice 79.
- CNotice 89
111Structural survey inspections are normally called up by the.
- Aoperator.
- Bmaintenance engineer.
- Cmanufacturer.
112Where are wing stations measured from?.
- AWater Line (WL).
- BZone Line (ZL).
- CButt Line (BL
113Where is Zone 323?.
- ABetween rear spar and trailing edge.
- BBetween front and rear spar.
- CTip of vertical stabiliser.
114To prevent a system being affected by high current flows after a lightning strike to a composite aircraft, electricity is discharged through.
- Aa sprayed coat of conductive paint.
- Ba sprayed coat of non-conductive paint.
- Celectrically connected primary conductors.
115A structural member intended to resist compression is a.
- Aweb.
- Btie.
- Cstrut.
116An aircraft structure, having multiple load paths, is known as a.
- Amonocoque design.
- Bfail-safe design.
- Csafe-life design.
117Wrinkling of the skin on the upper surface of the fuselage indicates.
- Ahogging.
- Bshedding.
- Csagging.
118If a redundant structure fails it becomes.
- Asafe-life.
- Bfatigued.
- Cfailsafe
119A redundant structure is.
- Aon-condition structure.
- Ba safe-life structure.
- Ca failsafe structure.
120The measurement of the fuselage perpendicular to horizontal plane measured in inches from bottom of the fuselage is.
- Abutt line.
- Bwater line.
- Cfuselage station.
121What are the four stresses to be considered when building an aircraft?.
- ACompression, Tension, Torsion, Stress.
- BCompression, Torsion, Stress, Strain.
- CCompression, Torsion, Tension, Shear.
122A structure that has a high designed reserve strength would be classified as.
- Asecondary.
- Btertiary.
- Cprimary.
123An example of primary stress is.
- Atension.
- Bbending.
- Cshear.
124What is the water line?.
- AThe zero datum from which all lateral locations are measured.
- BThe datum from which vertical locations refer.
- CA line below which redux bonding can not be used
125Lateral stations have station zero at the.
- Anose.
- Bleft wing tip.
- Ccentre line.
126Airworthiness requirements for large aircraft are found in.
- AJAR 25.
- BANO 25.
- CCS 25
127An Anthropomorphic Test Dummy (ATD) is strapped into a large aircraft forward facing seat. It is put through a series of crash tests. This is to.
- Ato measure the amount of force applied to the abdomen of the ATD to ensure it is not above 236 kg.
- Btest the aircraft structure and seating mount points for structural integrity.
- Cto determine whether or not the ATD\'s head comes into contact with any structure or seat, and if so to measure the force applied to the head in line with a specific Head Injury Criterion (HIC).
128What kind of seal is used on firewall bulkheads?.
- ANone is required.
- BFire-proof grommets.
- CSoft rubber.
129he two stages in a good adhesive bond are.
- Awetting and gripping.
- Bwetting and Setting.
- Cspreading and setting
130Prior to aluminium alloy bonding, we use.
- Aacid etch.
- Balkaline etch.
- Csolvent etch
131The purpose of a primer is to.
- Aprovide flexible surface for the top coat.
- Bhelp bonding of the topcoat.
- Cprovide shiny surface for the topcoat
132In semi-monocoque construction, compression loads are taken by.
- Astringers.
- Bbulkheads.
- Cframes
133Most large transport aircraft skins are.
- A7075.
- B5056.
- C2024.
134Which of the following statements is correct, in relation to PLI washers used in critical bolted joints?.
- APLI washers can only be used with self locking nuts and the washers should be used once.
- BPLI washers can be affected by thread or nut friction or by lubrication.
- CPLI washers can be used more than once, providing they are used in critical bolted joints
135What opposes buckling in a semi-monocoque structure?.
- ABulkheads.
- BFrames.
- CStringers
136In a monocoque structure, which component carries the majority of the loads?.
- ALongerons.
- BStringers.
- CSkin
137Which anti-corrosive treatment is found on alloy steels?.
- ANickel plating.
- BZinc plating.
- CCadmium plating.
138What material can be chromated as a protection against corrosion?.
- AAluminium alloys.
- BFerrous alloys.
- CMagnesium alloys.
139When carrying out a symmetry check on a large aircraft, what method of measurement is normally used?.
- ALateral alignment method.
- BLongitudinal alignment method.
- CSteel tape and spring balance
140Paint remover substances.
- Aare not damaging to any aircraft parts.
- Bare damaging to some aircraft parts.
- Cshould only be used once.
141To remove a rivet.
- Achisel off the rivet head, and remove the shank with a metal punch.
- Bdrill the head with a drill bit the same size as the rivet shank, chisel off the rivet head, and remove the shank with a metal punch.
- Cdrill the head with a drill bit slightly smaller than the rivet shank, chisel off the rivet head, and remove the shank with a metal punch
142Battery trays are.
- Aabsorbent to soak up electrolyte.
- Bmetal for earthing purposes.
- Cmetal with PVC coating and anti corrosive paint
143The primary purpose of sealant in use in pressurised aircraft is.
- Ato seal the cabin.
- Bto prevent corrosion.
- Cto provide external streamlining
144When installing a 'Hi-lock' bolt, it is necessary to.
- Alubricate the collar.
- Blubricate the shank and threads.
- Csimply fit the bolt as they are prelubricated.
145Sealant or levelling compound is installed during structure repair.
- Aaccording to separate manufacturer's documentations such as BAC.
- Baccording to SB instructions.
- Caccording to AMM and SRM chapter 51
146A bonded waffle doubler, as well as acting as a skin strengthener, also acts as a.
- Atear stopper.
- Bjury strut.
- Cshear tie
147What are the faying surfaces of a repair?.
- AMiddle of repair.
- BMaterial under repair.
- CEdges of repair metal
148Why is a joggle joint used?.
- ASmooth contour of surface.
- BAdded strength.
- CSo countersunk rivets do not need to be used.
149Dissimilar metal fusion bonding is best for.
- Alow strength high toughness.
- Bhigh strength high ductility.
- Chigh strength high toughness.
150The ideal conditions for paint spraying an aircraft are.
- A15°C to 25°C and humidity below 75%.
- B20°C to 30°C and humidity below 70%.
- C15°C to 25°C and humidity above 60%
151What are the types of true bonded joints?.
- ACemented and specific.
- BMechanical and specific.
- CMechanical and cemented.
152Why is a joggle joint used?.
- ATo provide a flush fit.
- BTo provide a smooth contour to surface.
- CTo add strength.
153When both sides of a structural repair are not easily reached, which type of fastener would you use?.
- ABlind rivet.
- BHi lock bolt.
- CPop rivet
154With regard to extraneous spilt fluids.
- Athey may be harmful to the aircraft structure.
- Bthey can be ignored, they provide extra protection.
- Cthey should only be cleaned up if they are on the external surface of the aircraft.
155Skin panels may be strengthened by.
- Astringers.
- Bstruts.
- Ccleats
156What is the normal form of construction of a spar?.
- AOne boom mounted under a web.
- BTwo webs separated by a boom.
- CTwo booms separated by a web
157A crack stopper is fitted.
- Aafter a crack starts, to slow its rate of propagation.
- Bbefore a crack starts, to prevent its initiation.
- Cbefore a crack starts, to slow its rate of propagation.
158Which of the following should be accomplished before jacking an aircraft?.
- AInstall critical stress panels or plates.
- BRemove all optional equipment.
- CDetermine the fuel tanks are empty.
159Synthetic resins are made from nylon, vinyl and.
- Aasphalt.
- Bcellulose.
- Cacrylics.
160One of the advantages of the semi-monocoque construction is that it.
- Ais easier to manufacture.
- Bshares the loads.
- Ctakes all the loads in the skin.
161 In a fully monocoque fuselage, all the loads are carried by the.
- Aframes.
- Bskin.
- Clongerons.
162Intercostals are.
- Avertical struts joining the upper and lower wings of a biplane.
- Blongitudinal fuselage members attached at each end to adjacent frames.
- Ccompression ribs in cantilever wings
163Joints that are designed to stop the propagation of cracks are known as.
- Acrack limiting joints.
- Bsecondary joints.
- Cfailsafe joints.
164If an aircraft has alkaline batteries, the battery compartment drain pipes will be.
- Aaluminium alloy.
- Bstainless steel.
- Cplastic
165An overweight landing is one in which the aircraft has.
- Aa missed placed centre of gravity on landing.
- Btoo much kinetic energy on landing.
- Can excessive fuel load on take-off
166Symmetry checks should be carried out.
- Ain the hangar with the aircraft on its wheels.
- Bon the ramp with the aircraft on its wheels.
- Cin the hanger with the aircraft on jacks.
167The purpose of a wash primer and primer is to.
- Ahelp bonding for top-coat.
- Bprovide more aerodynamic finish for top-coat.
- Cprovide a flexible surface for top-coat
168Dents are generally not permitted in a tubular member.
- Aif the major axis of the dent is parallel to the tube axis irrespective of the location.
- Bif they are located in the middle third of the length of the member.
- Cif they are located in the end thirds of the length of the member.
169When an item is cocooned, the visual indicator will indicate.
- Ahumidity.
- Btoxic gases.
- Ctemperature.
170The maximum permissible bow in a steel tube is.
- A1 in 400.
- B1 in 600.
- C1 in 200
171Buckling in a semi-monocoque structure is prevented by.
- Alongerons.
- Bbulkheads.
- Cstringers
172 Which loads do longerons resist?.
- ABending, compression and tensile.
- BTorsional only.
- CBending, compression, tensile and torsion
173What kind of seal is used on firewall bulkheads?.
- ASoft rubber.
- BFire-proof grommets.
- CNone is required.
174The two stages in a good adhesive bond are.
- Awetting and Setting.
- Bwetting and gripping.
- Cspreading and setting
175Prior to aluminium alloy bonding, we use.
- Aacid etch.
- Balkaline etch.
- Csolvent etch.
176The purpose of a primer is to.
- Aprovide shiny surface for the topcoat.
- Bprovide flexible surface for the top coat.
- Chelp bonding of the topcoat
177In semi-monocoque construction, compression loads are taken by.
- Astringers.
- Bbulkheads.
- Cframes
178Most large transport aircraft skins are.
- A2024.
- B7075.
- C5056.
179Which of the following statements is correct, in relation to PLI washers used in critical bolted joints?.
- APLI washers can be affected by thread or nut friction or by lubrication.
- BPLI washers can only be used with self locking nuts and the washers should be used once.
- CPLI washers can be used more than once, providing they are used in critical bolted joints
180In a monocoque structure, which component carries the majority of the loads?.
- ALongerons.
- BStringers.
- CSkin.
181Which anti-corrosive treatment is found on alloy steels?.
- AZinc plating.
- BCadmium plating.
- CNickel plating.
182When carrying out a symmetry check on a large aircraft, what method of measurement is normally used?.
- ALateral alignment method.
- BLongitudinal alignment method.
- CSteel tape and spring balance
183Paint remover substances.
- Aare damaging to some aircraft parts.
- Bshould only be used once.
- Cshould only be used once.
184To remove a rivet.
- Adrill the head with a drill bit slightly smaller than the rivet shank, chisel off the rivet head, and remove the shank with a metal punch.
- Bchisel off the rivet head, and remove the shank with a metal punch.
- Cdrill the head with a drill bit the same size as the rivet shank, chisel off the rivet head, and remove the shank with a metal punch.
185Battery trays are.
- Aabsorbent to soak up electrolyte.
- Bmetal for earthing purposes.
- Cmetal with PVC coating and anti corrosive paint
186The primary purpose of sealant in use in pressurised aircraft is.
- Ato seal the cabin.
- Bto prevent corrosion.
- Cto provide external streamlining
187When installing a 'Hi-lock' bolt, it is necessary to.
- Asimply fit the bolt as they are prelubricated.
- Blubricate the collar.
- Clubricate the shank and threads
188Sealant or levelling compound is installed during structure repair:.
- Aaccording to AMM and SRM chapter 51.
- Baccording to SB instructions.
- Caccording to separate manufacturer's documentations such as BAC
189A bonded waffle doubler, as well as acting as a skin strengthener, also acts as a.
- Ajury strut.
- Btear stopper.
- Cshear tie.
190What are the faying surfaces of a repair?.
- AMiddle of repair.
- BEdges of repair metal.
- CMaterial under repair.
191Why is a joggle joint used?.
- ASo countersunk rivets do not need to be used.
- BSmooth contour of surface.
- CAdded strength.
192Dissimilar metal fusion bonding is best for.
- Ahigh strength high toughness.
- Bhigh strength high stiffness.
- Clow strength high toughness
193The ideal conditions for paint spraying an aircraft are.
- A20°C to 30°C and humidity below 70%.
- B15°C to 25°C and humidity below 75%.
- C15°C to 25°C and humidity above 60%.
194What are the types of true bonded joints?.
- AMechanical and specific.
- BMechanical and cemented.
- CMechanical and cemented.
J
195Why is a joggle joint used?.
- ATo provide a smooth contour to surface.
- BTo add strength.
- CTo provide a flush fit
196When both sides of a structural repair are not easily reached, which type of fastener would you use?.
- APop rivet.
- BHi lock bolt.
- CBlind rivet
197With regard to extraneous spilt fluids.
- Athey may be harmful to the aircraft structure.
- Bthey should only be cleaned up if they are on the external surface of the aircraft.
- Cthey can be ignored, they provide extra protection.
198Skin panels may be strengthened by.
- Acleats.
- Bstruts.
- Cstringers
199What is the normal form of construction of a spar?.
- ATwo webs separated by a boom.
- BOne boom mounted under a web.
- CTwo booms separated by a web.
200A crack stopper is fitted.
- Abefore a crack starts, to prevent its initiation.
- Bbefore a crack starts, to slow its rate of propagation.
- Cafter a crack starts, to slow its rate of propagation
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- Quiz on Sistemas, created by oriol arrufat on 03/11/2018.
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- oriol arrufat
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- Created on 3 Nov 2018 · updated on 4 Nov 2018
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