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