Module 6 (B2) Module 6 (B2) quiz contains 60 question based on the syllabus for module 6 examination for B2 category. The time limit for the quiz is 75 min. The number of attempts allowed are unlimited. All the best. Name 1. On a rear insert plug the tool is used to insert the pins from the rear and extract from the front insert the pins from the front and extracted from the rear insert the pins from the rear and extract from the rear None 2. Heavy corrosion deposits on clad aluminum alloys should be removed chemically by use of phosphoric acid mechanically using a pneumatic vibrator chemically by use of trichloroethylene None 3. A self aligning bearing is a precision bearing radial bearing angular bearing None 4. What is an advantage of a double flare on aluminium tubing? Ease of construction It is more resistant to the shearing effect of torque It is less resistant to the shearing effect of torque None 5. A journal load is axial radial compression None 6. In the anodic film inspection and sealing test, if a good seal has been accomplished the dye mark has no importance. the dye mark will not rub off the dye mark will rub off None 7. An S-N curve is useful in the design evaluation process for testing shear force tension fatigue life None 8. A material's yield strength is the ability to resist side loads withstand a crushing force resist deformation None 9. What action is taken to protect integral tanks from corrosion due to micro-biological growth? Rubber liners are installed in the tank A biocidal additive is used in the fuel The inside of the tank is coated with yellow chromate None 10. A 3/8 inch aircraft high pressure flexible hose compared to a 3/8 inch metal tubing used in the same system will usually have interchangeable applications have equivalent flow characteristics have about the same OD None 11. The markings on a flexible hose must include the internal bore size manufacturers name date of manufacture None 12. Which of these is a common cause of corrosion? Water in fuel Spilled battery acid Untreated metal None 13. Impact resistance measures the material toughness material hardness material ductility None 14. Surface corrosion on stainless steel is identified by white film black pitting red rust None 15. What is stress corrosion? Corrosion due to fretting Corrosion in an area under continuous loading Corrosion in an area under cyclic loading None 16. In a sheet metal store the following is marked on a sheet of aluminium alloy: L162 (sheet 1). , On a different sheet the following marking is found: L172 (sheet 2). The following is true Sheet 1 has a shinier surface than sheet 2 Sheet 1 is more ductile than sheet 2 Sheet two is of a thicker gauge than sheet 1 None 17. Annealing of aluminum makes the material brittle removes stresses caused by forming increases the tensile strength None 18. What metal is suitable for riveting alloy steel? Mild steel Monel metal Aluminium alloy None 19. Strength of fibreglass is along the fibre either direction across the fibre None 20. The speed nut of an Instrument Mounting nut is made from steel brass phosphor bronze None 21. Cadmium plated rivets should not be used where the temperature may exceed 120°C 200°C 250°C None 22. If a material is found to be in the tertiary phase of creep the following procedure should be implemented: The component should be replaced immediately The component should under go dye penetrant process and condition monitored The crack should be stop drill, condition monitoring should be applied None 23. The 'Fatigue limit' for steel is generally in the region of, compared to the static U.T.S. 60%-80% 20%-40% 40%-60% None 24. A type of protection which is applicable to magnesium alloys is the chromating process coslettising process phosphate process None 25. How is a British aluminium rivet identified? Black anodic finish Natural anodised finish Violet anodic finish None 26. When buffing surface of Aluminum Alloy, what material are you removing? Aluminum Alloy Oxide layer None 27. Clad aluminum alloys are used in aircraft because they are stronger than unclad aluminum alloys are harder wearing than unclad aluminum alloys are less subject to corrosion than uncoated aluminum alloys None 28. What is fatigue? Cyclic stressing of a part Failure of a component due to corrosion Constant stressing of a part None 29. Spilled mercury on aluminum causes greyish powder, fuzzy deposit or whiskery growth yellowish stains on surface of the metal black pits going into brown rust None 30. Coil springs are made from carbon or high alloy steels with low working stress carbon or alloy steels with high working stress low carbon steels with high working stress None 31. When silver coated connectors are used in unpressurised parts of the aircraft separation of the coating can occur wet track arcing can occur red plague can occur None 32. An aluminium oxide layer on a conductor will do what when the temperature is increased? Become thicker Become thinner Remain the same None 33. Cables are preferred to other control systems because they maintain slight mechanical advantage over push/pull systems they are strong and light single braid allows for 2 way directions None 34. High speed steel relies heavily on the following metallic element for its ability to cut other metals, even when it is heated to a dull red colour Vanadium Nickel Tungsten None 35. Steel music wire is made of high carbon or nickel alloy used for lower strength springs used for high strength springs and as progressive-rate springs None 36. Studs which have a size larger thread at one end are called stepped studs plain studs shouldered studs None 37. Electrochemical reaction is caused by the contact of moisture on the surface of the metal bonding dissimilar metals None 38. If you can only gain limited access to both sides of a structure, what would you use to repair the structure? A hylok A pop rivet A blind rivet None 39. What type of corrosion attacks grain boundaries of aluminium alloys which are improperly or inadequately heat treated? Surface corrosion Stress corrosion Intergranular corrosion None 40. Cherrymax and Olympic-Lok rivets utilize a pulling tool for installation may be installed with ordinary hand tools utilize a rivet gun, special rivet set, and bucking bar for installation None 41. How is the locking feature of the fibre-type locknut obtained? By a fibre insert held firmly in place at the base of the load carrying section By the use of an unthreaded fibre locking insert By making the threads in the fibre insert slightly smaller than those in the load carrying section None 42. A bolt with a single dash on the head is classified as an NAS close tolerance bolt AN corrosion resistant steel bolt NAS standard aircraft bolt None 43. Alclad is aluminum with duralumin cladding duralumin with magnesium cladding duralumin with aluminum coating None 44. Corrosion on a copper alloy can be recognized by white deposit blue/green deposit grey deposit None 45. What are the rigid pipes on gas turbine engines made from? Aluminium alloy Copper Stainless steel None 46. The S.I. unit for strain is no units P.S.I. Nmm None 47. Case hardening can be carried out on any ferrous metal titanium duralumin None 48. A rivet with no marking has the material code AD A D None 49. Specified time of contact between the indentor and test piece in a vickers or brinell hardness test is 15 seconds 10 seconds 20 seconds None 50. Intergranular corrosion is also known as what? Stress corrosion Galvanic Exfoliation None 51. Direct removal connector pins are fitted from the rear and removed from the rear are fitted from the front but removed from the rear and removed from the front None 52. A main difference between Lockbolt/Hucbolt tension and shear fasteners (other than their application) is in the number of locking collar grooves shape of the head method of installation None 53. Cable tension is maintained by a fairlead a cable tension regulator a grommet None 54. Corrosion control begins at the manufacturing stage production stage design stage None 55. Which of the following could best be manufactured from Perspex panel? A passenger window A cockpit windscreen A radome None 56. Needle roller bearings are susceptible to brinelling can accept a small amount of misalignment are designed to carry axial loads None 57. A feather key locates a gear on a shaft and permits a positive and strong drive for transmissions positive drive with the gear firmly locked positive drive and axial movement None 58. The magnesium alloys used in aircraft can be recognized by silver surface due to protective coating shiny surface due to chromium plated on the surface yellowish surface due to protective treatment None 59. What metal is suitable for riveting magnesium alloy? Monel metal 1100 aluminium alloy 5056 aluminium alloy None 60. A metric screw thread angle is 7 ° 57 ° 60 ° None 1 out of 1
