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#1. Recessed triangle on head surface
#2. Tempered condition refers to the condition of metal or metal alloys with respect to …………. Or ………..
#3. Nickel increase ……….. & ………. When combined with carbon steel.
#4. Steel with less than 0.85 C is called
#5. INCONEL is a alloy of…………
#6. INCONEL has strength greater than ……..percent of Nickel.
#7. Fairleads should never deflect the ailment of cable more than _____from straight line
#8. ………have no clearly defined grip length
#9. Annealing process used in sheet and wire industries to restore ductility is
#10. MTCS about Glue
#11. As a general rule, a soaking period of ………….. to …………is sufficient for the average heat-treating operation.
#12. Which type of plastics harden upto heating, and reheating has no softening effect
#13. When a piece of metal is cut, the material is subjected, as it comes in contact with the cutting edge, to a force known as…………
#14. .Which gear is one which the teeth are cut so that they radiate from apex of the cone and lie on the conical surface
#15. Diametric pitch of gear is ? shop theory
#16. In hot working metal is heated ………… and rolled into various shapes.
#17. Beryllium Cu physical properties can be inc by
#18. If the finished forged surface is concave……..
#19. Corrosion on ferrous metals is chemically removed by caustic and non-caustic chemicals depending upon:-
#20. SAE 1010 to 1030 is a ………….. carbon steel.
#21. The temperature of heat-treating furnace is measured by………….
#22. Sheet forms is used for secondary structural stressed structural parts
#23. Furnaces operating at temperature of about 2500 degree F usually employ resister bar of ………………….
#24. A O-ring designate specifically for the use as a static Seal properly will not to the job when installed on the
#25. Which type of the corrosion penetrates to the core
#26. MTCS
#27. Bearing which takes radial loads
#28. . ………… furnaces require air for proper combustion and an air compressor or blower is therefore necessary.
#29. …………are shaped or formed by pressing or hammering heated metal in dies.
#30. Lead baths can be used in the temperature range of……………….
#31. . ………. Welds readily and has working qualities quite similar to those of corrosion resistance steels.
#32. The size of gear is determined by
#33. Surface oxidation of steel or cast iron is often known as …………
#34. A salt bath heating range is…………….
#35. Which type of fitting is used in plumbing
#36. Nickel steel causes the spark stream
#37. . …………steel has replaced carbon steel in fabrication of structural parts.
#38. The 6000 series contains
#39. In annealing greater softening can be achieved if
#40. Chromium in Stainless Steel makes it:
#41. Strength of chrome vanadium stell can be increased by ? 9A 5-69 0R 5-4
#42. ………percent of copper may be present as incidental elements in alloy steels.
#43. The distance a screw thread advance axially in one turn
#44. Stainless steel expands about………..percent more than mild steel.
#45. The extra flexible control cables are used in
#46. The thermocouple which can be used upto 2800 deg. F, is made of ………. & ………..
#47. As the temperature increases colour of steel changes from dull red to a variety of colours and finally to…………..
#48. The portion of tooth space that is cut below the pitch circle is equal to addendum plus clearance ?
#49. Balls and rollers of anti-friction bearings are generally made of ….
#50. The Belleville spring are used in
#51. Mark the correct statement:- (DGCA Paper-2 Exam)
#52. muntz metal composed of ___________
#53. MTCS Clearance
#54. Which has low water absorption rate and good resistance and low temperature
#55. To relieve strain and reduce brittleness steel is ………. after being hardened.
#56. Presence of Sulphur in Iron makes it :
#57. When a section dimensions are 6” X 6” or larger & approx. square is called……
#58. The ………….. strength of material is it’s resistance to twisting.
#59. Running seal is
#60. …………is used for making compressor disk, spacer rings, compressor blades and vanes, through bolts, turbine housing and lines, and miscellaneous hardware for turbine engine.
#61. Which of the following is easily removable
#62. What are miter gear
#63. Hardest structure of metals
#64. MTCS about Microbiological corrosion
#65. One of the distinctive features of 18-8 steel is that…………… . .
#66. After heat treatment tempering is done to
#67. Nitriding is used for
#68. To produce maximum softness the metal must be cooled ………..
#69. Al is vital to aviation because
#70. Four- Numerical series is used to designate the