546. When carrying out dye penetrant inspection, how soon after applying the developer do you check the results
a) 25 - 90 minutes b) 15 - 30 minutes c) 5 - 60 minutes
547. Why do you joggle a surface sheet a) To have a Smooth Surface Finish b) For Tear Protection
c) To increase strength
548. What types of bonding adhesion are there a) Mechanical and Specific
b) Chemical and Specific c) Chemical and Mechanical
549. What are faying surfaces a) Metal surfaces
b) Opposed surfaces c) Mating surfaces
550. When joining metals together what do you use a) Compound
b) Grease c) Paint
551. Dye penetrant at –15°
a) Needs a longer penetrating time b) Work as normal
c) Will not flow
552.
Dye penetrate developer goes pink on application because a) Colour depends on manufacturerb)
Excess penetrate has not been cleaned properly c) It is normal553. Magnetic flux detection will show a) Longitudinal only
b) Lateral only
c) Longitudinal and lateral deflection
554.
Dye penetrate kits should be storeda) In a Dark damp cupboard b) In direct sunlight to keep it dry c) Out of sunlight in a dry place 555. For an eddy current inspection
a) Paint needs to be removed
b) Paint does not need to be removed c) Special grease must be applied
556. Corrosion which attacks the crystals of the metal is called a) Magnetic flow
b) Ultrasonic c) Electro-flow
557. The three phases of eliminating corrosion are
a) Immediately on removal of the item from the chalk cabinet b) When the item is quite hot
c) When the item is quite cool
558. Microbiological corrosion is usually present a) Magnetic flux
b) Electro-flux c) Dye penetrate
559. The most corroded part in galvanic corrosion is
a) Allowed to cool room temperature as slowly as possible b) De-magnetised before returning to service
c) Allowed to lose any residual magnetism over a long a period possible 560. Corrosion by erosion and cavitations is caused by
a) The temperature has no effect
b) The canister must be locally warmed before use c) The penetrate tends to precipitate
561. The artificial production of a film of hydroxide on the surface of aluminium or any of its alloys is commonly called
a) Alodizing b) Anodizing c) Parco lubrizing
562.
Inter granular corrosion in structural aluminium alloy partsa) Is not likely to occur in parts fabricated from heat-treated sheet aluminum b) May be detected by white powdery deposit formed on the surface of the metal c) Cannot always be detected by surface indications
563. Galvanic action caused by dissimilar metal contact my be best prevented by a) Priming both surfaces with a light coat of zinc chromate primer
b) Applying non-porous dielectric material between the surfaces c) Special precautions are not required if they are properly bonded 564. Corrosion caused by electrolytic action is the result of
a) Excessive anodization
b) Contact between two unlike metals c) The wrong quenching agent
565. What type of corrosion attacks grain boundaries of aluminium alloys which are improperly or inadequately heat treated?
a) Surface b) Stress
c) Inter granular
566. Exfoliation corrosion is/are a) Worm casts
b) Layers of corrosion c) Fretting corrosion
567. Inter granular corrosion is caused by false heat treatment. On stainless steel exhaust to detect
a) Measure tensile strength b) Test material hardness
568. Crevice corrosion due bad design and a) Bad sealing
b) Wrong heat treatment c) To close spacing
569. On aluminum corrosion remove corrosion with aluminum wool a) And steel wool
b) But no steel wool c) And a wire bush
570. After aluminum corrosion is removed treat first with a) Paint
b) Sealant
c) Aluchrome 1200
571. Exfoliation corrosion is/are a) Worm casts
b) Layers of corrosion c) Fretting corrosion
572. Inter granular corrosion is caused by false heat treatment. On stainless steel exhaust to detect
a) Measure tensile strength b) Test material hardness
c) Measure magnetic permeability 573. Crevice corrosion due bad design and
a) Bad sealing
b) Wrong heat treatment c) To close spacing
574. On aluminum corrosion remove corrosion with aluminum wool a) And steel wool
b) But no steel wool c) And a wire bush
575. After aluminum corrosion is removed treat first with a) Paint
b) Sealant
c) Aluchrome 1200
576. When dissimilar metals are brought together, or the same metal in different states, one metal forms the anode and the other the cathode. Which one will suffer from corrosion?
a) The cathode b) The anode
577. After welding, stainless steel is susceptible to corrosion known as a) Weld deterioration
b) Weld rot c) Weld decay
578. Corrosion will spread more rapidly when metals are exposed to a) High temperature
b) Dry climates c) Cool climates
579. Select the metal on which corrosion forms a greenish film a) Aluminum and its alloy
b) Copper and its alloy c) Titanium and its alloy
580. The lifting or flaking of the metal at the surface due to delamination of grain boundaries caused by the pressure of corrosion is
a) Trans granulation b) Electrolysis c) Exfoliation
581. Nitric Acid is used to identify bronze, a) It produces black powder
b) It produces white powder c) It produces brown powder
582. To remove corrosion from steel use a) Sulphuric acid
b) Chomic acid c) Phosphoric acid
583. Crevice corrosion is due a) Bad sealing
b) Vibration
c) Wrong heat treatment
584. Less noble material is anodized: with steel and aluminium a) Steel is sacrificed
b) Aluminium is sacrificed c) Both are equally noble
585. Aluminium corrosion should never be removed with a) Nylon wheel
b) Aluminum wool c) Steel wool
586. Filiform corrosion are a) Layers of corrosion b) Worm casts
c) Exfoliation corrosion 587. Exfoliation corrosion are
a) Inter granular corrosion b) Due rubbing against each other c) Layers of corrosion
588.
Inter granular corrosion is due false heat treatment. On stainless steel exhausts a) Measure magnetic permeabilityb) Perform a magnetic particle check c) Dye check is sufficient
589. Chemical removal of corrosion on aluminium: use __________ , reprotect with Aluchrome 1200 and 2 layers of primer.
a) Selenic acid b) Phosphoric acid c) Chromic acid
590. For magnesium use 2 oz of chromic and 2 drops of __________ acid a) Nitric
b) Selenious c) Sulphuric
591. Corrosion on aluminum: Remove with nylon brush, neutralize with _____________, protect with aluchrome 1200 and paint 2 layers of zinc chromate.
a) Citric acid b) Phosphoric acid c) Nitric acid
592. To remove corrosion from steel use a wire brush and a) Boric acid
b) Nitric acid c) Caustic soda
593. For corrosion on _________ use 2 oz chromic & 2 drops of sulphuric acid a) Magnesium
b) Titanium c) Aluminium
594. _____ ____on aluminum alloy produces black and on steel brown powder a) Filiform corrosion
b) Freeting corrosion c) Exfoliation corrosion 595. Filiform corrosion is/are
a) Layers of corrosion b) Dissimilar corrosion c) Worm casts
596. Thrust bearings are used for a) Radial load
b) Axial load c) Journal load
597. V-mark on a bearing means a) Over size bearing
b) High speed wheel bearing c) Bearing comes is set of 2 or 3
598. 'Fill in slot' _____________ load carrying capacity. a) Increases
b) Decreases
c) Does not influence
599. ______________ colour on bearings means they are overheated a) Brown
b) Blue c) White
600. Brown colour on bearings means they are a) Rusty
b) Overheated c) Brown from oil 601. Thrust bearing carry
a) Radial load b) Axial load c) Torque load
602. 'Fill in slot' in bearing ________ the load carrying capacity a) Equalizes
b) Decreases c) Increases
603. V-marks on bearing mean a) Bearing comes in set of 2 or 3
b) Bearing can be used for axial and radial load c) Bearing for high rotational speed
604. Dots on bearings: 1 to 5 dots define _________ of bearing a) Hardness
b) Oversize c) Load capacity
605. Pipes: bend radii is ____ times diameter a) 4-5
b) 2-3 c) 3-4
606. Thrust bearings are used for a) Radial load
b) Axial load
c) Both axial and radial loads
607. Brinelling on bearings is caused by
a)
Loose wheel nutb) Heavy landings c) Over tight wheel nut 608. Blue bearings a) Are overheated b) Are acceptable c) Must be x-rayed 609. Brown bearings a) Are overheated b) Are acceptable c) Must be x-rayed
610. Radial load = journal load bearings are e.g. a) Brass bearings
b) Needle bearings c) Wheel bearings Module 7.11 Bearings 1 3 -
611. On a thrust bearing the loads taken are a) Axial and slight radial
b) Axial and radial c) Radial only
612. On a spherical bearing it transmits
a) Predominantly radial loads with moderate axial loads b) Predominantly axial loads with moderate radial loads c) Axial and slight radial loads
613. After an aircraft lightning strike a) Bearings do not need to be checked
b) Don’t carry out an inspection unless hole is over the maximum diameter allowed c) Check full range of movement to check bearings and control surfaces
614. What do you call the effect of light dimpling on a surface of a bearing a) Calorizing
b) Austeniting c) Brinelling
615. Tapered roller bearings take a) Radial loads only
b) Radial and axial loads c) Axial loads only
616. Roller bearings for _________ radial loads than ball bearings a) Smaller
b) Same c) Greater
617. A typical use of needle bearings is for a) Wheels
b) Rod ends c) Gears
618. Bearings are cleaned with a) White spirit
b) Oil c) Solvent
619. To prevent corrosion on cleaned bearings they are a) Dryed with dry compressed air and oiled
b) Greased c) Oiled
620. Bearings should be stored _________________ and reinspected for corrosion a) Vertically b) Horizontally c) Vertically or horizontally Module 7.12Transmissions 1 3 - 621. A chain is removed by a) Springs clips
b) Nuts and bolts
c) Removing chain links on an endless chain 622. If light corrosion is found on a chain it is
a) Dye checked b) To be replaced
c) To be cleaned insp and re lubed
623. Three things which are used to classify a chain
a) Diameter of roller, pitch, distance between inner plates b) Diameter of roller, pitch, distance between outer plates c) Diameter of roller and pitch
624. If you remove a chain for routine inspection a) You are not required to proof load it
b) You are required to proof load it c) You are required to replace the chain
625. How do you remove a chain a) Remove clip
b) Remove rivets
c) Only at screwed and bolted attachment parts 626. With a new chain do you
a) Clean lubrication and fit
b) Clean lubrication and pack in grease proof paper c) Clean and lubricate after fitting
627. With a new chain you a) Clean lubrication and fit
b) Do not remove initial lubrication
c) Clean lubrication and pack in grease proof paper 628. When dismantling chains, disconnect at
a) Spring Clip b) Bolted joints c) Riveted joints
629. Chains have no quick detatch they are riveted or bolted. Maximum elongation is a) 10%
b) 5% c) 2%
630. Chains must not be twisted. To change direction use a a) Pulley
b) Bi-planar block c) Reversion link
631. A or an _______ of pipe diameter steel ball must pass through pipes when bent or dented
a) 70% b) 80% c) 90%
632. A or an _______ of flex hose diameter steel ball must pass through when bent or at dents
a) 70% b) 80% c) 90%
633. When making flare the pipe must ________________ cone
a)
Be flush withb) Slightly protrude c) Slightly recess
634. UK flare on British AGS is
a)
37˚b)
32˚c)
60˚ 635. US Flare isa)
64˚b)
60˚c)
37˚636. Flareless B-Nut tighten by hand plus 1/6 to 1/3. Pressure test is _______ working pressure.
a) Same as b) 1.5 times c) 2 times
637.
A ___ diameter steel ball must pass on pipes a) 75%b) 90% c) 80%
638. A ___ diameter steel ball must pass on a flex hose a) 90%
b) 80% c) 75%
639. Hose must be _______________ distance a) 5% longer than
b) 3% longer than c) The same length as the
640. Leather must not be used near pipes a) Because it will not skydrol resistant b) It is not strong enough for clamps c) Because of corrosion