Module 6 (B1) Module 6 (B1) quiz contains 72 question based on the syllabus for module 6 examination for B1 category. The time limit for the quiz is 90 min. The number of attempts allowed are unlimited. All the best. Name 1. Compared with the spur gears, spiral gears have have mechanical advantages less stress concentration on gears more wear resistance None 2. What is used for marking out steels? Copper sulphate Wax crayon Engineers blue None 3. The proof stress of a material is the stress at which necking of the material begins the material yields small amount of permanent set takes place None 4. A gas or fluid line marked with the letters PHDAN is carrying a substance which may be dangerous to personnel is a high pressure line. The letters mean Pressure High, Discharge at Nacelle is carrying a substance which cannot be made non-toxic None 5. Where would you find the inspection interval for chains? Overhaul manual Maintenance schedule Maintenance manual None 6. A tab washer has been removed after fitment for a short time from a non essential system, the tab washer may be re-used re-used if a spare is not available not re-used None 7. The pitch of a screw thread is crest to root 2 * crest to root crest to crest None 8. Polyester resin and glass fibre cloth, becomes PTFE PVC GRP None 9. A spring washer maybe used more than once provided it continues to provide an efficient lock must not be used more than once may be used a second time provided it is fitted the reverse way round None 10. How does the routing of coaxial cables differ from the routing of electrical wires? Coaxial cables are routed at right angles to stringers and ribs Coaxial cables are routed parallel with stringers and ribs Coaxial cables are routed as directly as possible None 11. When rotating a ball bearing by hand, a regular click indicates a cracked ring intergranular corrosion in the outer ring damage to the balls None 12. A single start thread the lead is 1⁄2 * pitch 1 * pitch 2 * pitch None 13. What is meant by the term Pitch Ratio? The distance between two holes The area of contact between the two sheets of metal when joining by rivets The distance between the hole and the edge of the material None 14. The information on rivet grip length is in which rivet code quadrant? NW NE SE None 15. Which of the following thread designations is most fatigue resistant? UNJF UNF UNC None 16. When checking the safety of turnbuckles you should use what? Wire the same diameter as the inspection hole Visual check Wire smaller than inspection hole None 17. Cold working of a material is used to reduce material hardness wear of manufacturing tools fatigue None 18. Lead acid battery fluid has been found to be leaking on the surface of the aircraft structure. What substance would you use to neutralize the acid? Hot distilled water Sulphur and Lime Sodium bicarbonate of soda None 19. Split pins may be used more than once can be used more than once but depends on the material of the split pin may be used only once None 20. Which rivet may be used as received without further treatment? 2117-T3 2024-T4 2017-T3 None 21. Galvanic corrosion is most likely to be most rapid and severe when the surface area of the cathodic metal and the anodic material are approximately the same. the surface area of the anodic metal is smaller than the surface area of the cathodic material the surface area of the cathodic metal is smaller than the surface area of the anodic material None 22. Cast iron is tough very malleable heavy and brittle None 23. Case hardening can be carried out on titanium any ferrous metal duralumin None 24. A material containing approximately 66% nickel and 33% copper is known as Inva Nimonic Monel metal None 25. Aluminum alloy parts are often protected by the chromium plating process Alocrom plating Alocrom 1200 process None 26. In most aircraft hydraulic systems, two-piece tube connectors consisting of a sleeve and a nut are used when a tubing flare is required. The use of this type of connector eliminates wrench damage to the tubing during the tightening process the flaring operation prior to assembly the possibility of reducing the flare thickness by wiping or ironing during the tightening process None 27. A tube complying to BS T51 is tungum HTS tube high pressure seamless copper tube None 28. When a solid rivet is formed it only holds 75% of its shear strength, the other 25% comes from heating the completed assembly cooling completed assembly leaving assembly for 4 days to age harden None 29. Fatigue failure may be defined as failure caused by stress in excess of the material U.T.S. reduction in strength due to alternating loads failure due to impact None 30. The ease with which a material can be forged, rolled and extruded without fracture is an indication of a material's ductility malleability brittleness None 31. Which of these core materials will be used in the making of a composite material flat panel? Flexible core Hexagonal core Rectangular core None 32. During a Rockwell Hardness test, what dimension is measured? The diameter and depth of the indent The diameter of the indent The depth of the indent None 33. Silica gel is used for moisture control during storage, when serviceable it is coloured blue white pink None 34. H.T. leads are multi-strand, multi-core, screened multi-strand, single-core, screened single-strand, single-core, screened None 35. A square around the NW digit in the quadrant of a fastener would indicate fluid tight fastner interference fit fastener hi-lock to be used None 36. The cage of an Instrument Mounting nut is made from phosphor bronze steel brass None 37. Corrosion caused by electrolytic action is the result of contact between two unlike metals excessive anodization the wrong quenching agent None 38. Equipment wire can be used for interconnect wiring is flexible and suitable for soldering has thicker insulation than interconnect wire None 39. Flexible hose used in aircraft systems is classified in size according to the outside diameter inside diameter wall thickness None 40. Epicyclic gears are used on shafts rotating on the same axis shafts rotating on offset axis shafts rotating on axis 90 degrees from each other None 41. Which is the following correct statement? All corrosion is a chemical action The chemical test for bronze is nitric acid which produces a white precipitate Selenious acid is used for the re- protection of aluminium alloys None 42. A flexible sealing element subject to motion is a compound gasket packing None 43. Malleable materials are normally also highly ductile easily forged easy to cast None 44. A clevis bolt in a control cable fork end would be loaded in both tension and shear shear tension None 45. Heat treatment is shown on a British aluminum alloy by a number code letter code letter and number code None 46. Intergranular corrosion in structural aluminum alloy parts are not likely to occur in parts fabricated from heat-treated sheet aluminum may be detected by the white, powdery deposit formed on the surface of the metal cannot always be detected by surface indications None 47. Aluminium is not resistant to corrosion reasonably resistant to corrosion highly resistant to corrosion None 48. Some metals are inherently stable. What does this suggest? They are highly prone to corrosion They strongly resist corrosion They try to revert to their natural state None 49. What are the signs of fretting corrosion on steel? Surface cracking as corrosion breaks through to surface of component Rust on surface Dark staining around area None 50. Interconnect cables. employ thinner insulation than airframe types are used for equipment wire in the unified system are the cable through the MEC to the engine None 51. The head marking on a close tolerance BSF bolt is a series of dots on the head face a raised disk on the head face a lowered ring under the hexagon None 52. Two parts of the adhesive process are spreading and setting wetting and gripping wetting and setting None 53. In the Brinell hardness test, you would measure the indentation's area depth diameter None 54. The continuous coloured line on a hose assembly identifies hose material will assist in detection of any twist in an installed hose identifies fluid compatibility of hose None 55. Austenitic steel is produced when the material is heated to above the Lower Critical Point above the Upper Critical Point below the Upper Critical Point None 56. What colour is the corrosion found on the surface of aluminum alloys? White/Grey Green/Blue Black None 57. How do you assemble a banjo hose? Put washer either side of the banjo Put a washer on the inside of the banjo only Put a washer on the outside of the banjo only None 58. The most suitable mixture for a salt bath operation is 90% nitrate of soda and 10% sodium nitrate 20% nitrate of soda and 80% sodium nitrate 70% sodium chlorate and 30% sodium nitrate None 59. A fire resistant cable must maintain adequate insulation in a fire for 30 minutes 10 minutes 5 minutes None 60. On bevel gear teeth, the wear pattern should be at the centre of the tooth greatest at the heel, least at the toe greatest at the toe, tapering off to the heel None 61. The symbol 'W' on a material indicates it has been solution treated and will respond effectively to precipitation treatment it is for workshop use only it is for use on aircraft main planes only None 62. The addition of chromium to steel will produce toughness hardness ductility None 63. Corrosion will spread more rapidly when metals are exposed to high temperatures dry climates cold climates None 64. The time between removal from heat treatment furnace and quenching must be not more than 7 seconds 3 seconds 10 seconds None 65. The ability of mild steel to accept more load after the yield point is reached is due to strain hardening necking plasticisation None 66. The classification for fibreglass reinforcement material that is high resistivity and the most common is E-glass S-glass G-glass None 67. The pin section of an AN/MS connector is normally installed on either side of a circuit (makes no difference) the power supply side of the circuit the ground side of the circuit None 68. Non-reversible chains can only be moved in one direction only be fitted in one direction not be fitted through pressure bulkheads None 69. When two or more metallic materials are fused together, the combination is known as a thermosetting compound an alloy a composite material None 70. A chain is checked for stiff links by running the chain over a finger by 180 degrees hanging by hand by measure and sight stretching out and measuring None 71. The S.I. unit for strain is no units Nmm P.S.I. None 72. What is stress corrosion? Corrosion due to fretting Corrosion in an area under continuous loading Corrosion in an area under cyclic loading None 1 out of 1
