Module 6 Set-2

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#1. Balls and rollers of anti-friction bearings are generally made of ….

#2. 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…………

#3. Tempered condition refers to the condition of metal or metal alloys with respect to …………. Or ………..

#4. To relieve strain and reduce brittleness steel is ………. after being hardened.

#5. Surface oxidation of steel or cast iron is often known as …………




#6. Running seal is

#7. Furnaces operating at temperature of about 2500 degree F usually employ resister bar of ………………….

#8. When the alloy become too hard for further forming it have to be re-heat treated or …………

#9. Stainless steel expands about………..percent more than mild steel.

#10. Recessed triangle on head surface




#11. MTCS about Glue

#12. Which of the following is easily removable

#13. As a general rule, a soaking period of ………….. to …………is sufficient for the average heat-treating operation.

#14. In Chrome-vanadium steel, the percentage of chromium and vanadium are…….

#15. Which type of the corrosion penetrates to the core




#16. SAE 1010 to 1030 is a ………….. carbon steel.

#17. MTCS Clearance

#18. ………percent of copper may be present as incidental elements in alloy steels.

#19. The thermocouple which can be used upto 2800 deg. F, is made of ………. & ………..

#20. The temperature of heat-treating furnace is measured by………….




#21. The portion of tooth space that is cut below the pitch circle is equal to addendum plus clearance ?

#22. Nickel steel causes the spark stream

#23. To produce maximum softness the metal must be cooled ………..

#24. The ………….. strength of material is it’s resistance to twisting.

#25. In annealing greater softening can be achieved if




#26. …………is used for making compressor disk, spacer rings, compressor blades and vanes, through bolts, turbine housing and lines, and miscellaneous hardware for turbine engine.

#27. When a section dimensions are 6” X 6” or larger & approx. square is called……

#28. . ………… furnaces require air for proper combustion and an air compressor or blower is therefore necessary.

#29. Which has low water absorption rate and good resistance and low temperature

#30. MTCS




#31. If the finished forged surface is concave……..

#32. One of the distinctive features of 18-8 steel is that…………… . .

#33. . …………steel has replaced carbon steel in fabrication of structural parts.

#34. Chromium in Stainless Steel makes it:

#35. Bearing which takes radial loads




#36. The distance a screw thread advance axially in one turn

#37. Annealing process used in sheet and wire industries to restore ductility is

#38. Al is vital to aviation because

#39. The extra flexible control cables are used in

#40. A O-ring designate specifically for the use as a static Seal properly will not to the job when installed on the




#41. Hardest structure of metals

#42. Which type of plastics harden upto heating, and reheating has no softening effect

#43. .Which gear is one which the teeth are cut so that they radiate from apex of the cone and lie on the conical surface

#44. After heat treatment tempering is done to

#45. MTCS about Microbiological corrosion




#46. Which type of fitting is used in plumbing

#47. Diametric pitch of gear is ? shop theory

#48. Nitriding is used for

#49. As the temperature increases colour of steel changes from dull red to a variety of colours and finally to…………..

#50. Four- Numerical series is used to designate the




#51. Mark the correct statement:- (DGCA Paper-2 Exam)

#52. Lead baths can be used in the temperature range of……………….

#53. In hot working metal is heated ………… and rolled into various shapes.

#54. Strength of chrome vanadium stell can be increased by ? 9A 5-69 0R 5-4

#55. INCONEL is a alloy of…………




#56. Sheet forms is used for secondary structural stressed structural parts

#57. The Belleville spring are used in

#58. Fairleads should never deflect the ailment of cable more than _____from straight line

#59. INCONEL has strength greater than ……..percent of Nickel.

#60. ………have no clearly defined grip length




#61. Corrosion on ferrous metals is chemically removed by caustic and non-caustic chemicals depending upon:-

#62. A salt bath heating range is…………….

#63. Nickel increase ……….. & ………. When combined with carbon steel.

#64. The size of gear is determined by

#65. What are miter gear




#66. muntz metal composed of ___________

#67. Presence of Sulphur in Iron makes it :

#68. . ………. Welds readily and has working qualities quite similar to those of corrosion resistance steels.

#69. …………are shaped or formed by pressing or hammering heated metal in dies.

#70. The 6000 series contains




#71. Beryllium Cu physical properties can be inc by

#72. Steel with less than 0.85 C is called

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