Mechanical Manufacturing Processes: Quiz 1

1. ------------- material properties are more important to select manufacturing processes.

Mechanical

2. Stress-strain diagram of material provide understanding of ------ properties.

Mechanical

3. Specimen breaks suddenly without any necking, if material is

Brittle

4. -------- property of material helps to be beaten to thin sheets and foils

Malleability

5. Opposing property of material to brittleness is ------

Ductility

6. If modulus of elasticity is high, the material is called having -----

Stiff

7. The property which enables a material to withstand both elastic and plastic strains is ------

Toughness

8. If a component is subjected to alternate stresses, the failure is due to—

Fatigue

9. The practical carbon % in Steel is -----

0 to 1.3%

10. Carbon % in Mild steel

0.15 to 0.3%

11. The steel used extensively for structural work is

Mild Steel

12. Steel for making hand tools like hammers is

High Carbon Steel

13. Machine beds are made by

Grey CI

14. Malleable Cast Iron is produced from

White CI

15. Dairy equipment is made from

Stainless Steel

16. The heat treatment process to relieve internal stresses

Both Normalizing and Annealing

17. The material extensively used in electrical industry

Copper

18. Material used for making Thermo-couples

Cupro - Nickel

19. Beverage cans are made from

Aluminium

20. Torch light batteries are made from

Zinc

21. Ceramic parts are made by ------- process

Powder Metallurgy

22. ------- are called electronic materials

Semiconductor

23. Tennis rockets are made from

Composite Materials

24. Primary manufacturing processes are

Both Casting & Forming

25. The manufacturing process which uses molten metal to produce parts.

Casting

26. Forging process is ----- process

Forming

27. Semi-permanent joining of metal is by

Riveting

28. When high quality components are required, the dependable process is

Machining

29. Machining required ------ tools

All

30. Selection of manufacturing processes is affected by

All

31. ------ hand tool is used for striking the sand mass in the flask to pack it uniformly around the pattern.

Rammer

32. To create hollow castings ----- is to be mounted in the mould cavity.

Core

33. To support the core in the mould cavity ---- is used.

Both Chaplet & Core Print

34. The metallic elements kept in mould, to provide uniform cooling at different cross sections of casting, during solidification.

Chill

35. -------- is provided to compensate liquid shrinkage of castings

Riser

36. The lower flask of the mould is called

Drag

37. Horizontal passage way in the gating system is called

Runner

38. Vertical passage way in the gating system is called

Sprue

39. Common defect in green sand moulds is

Blow hole

40. To produce large axy-symmetrical cavities --- pattern is used

Sweep Pattern

41. Pattern shape and size differs from casting because of ---

All

42. The pattern allowance provided for easy removal of pattern from moulding sand without much disturbance

Draft

43. The property of moulding sand allow it to withstand high temperatures is

Refractoriness

44. Optimum filling time of mould cavity depends on

All

45. Providing runner extension if for ---

Slag trapping

46. Best geometrical shape suitable for riser is ----

Spherical

47. Cast Iron melting is done in ---- furnace

Cupola

48. Total process of cleaning of casting is called

Fettling

49. "Whirl gate" is introduced in moulding to -----

Slag Trap

50. Crucible furnace is used to melt ------ metals

Brass

51. The furnace used to melt large quantities of Steel & Iron

Blast Furnace

52. Sand blasting is used for ------ in casting process.

Cleaning

53. When used large grain size of sand, the possible casting defect is

Penetration

54. The inspection which provides the exact size and location of defect in casting is ----

Ultrasonic

55. Uniform mould hardness is possible in ------ type of machine moulding.

Sand slinger

56. Special casting process that uses sand to make mould is -

Shell moulding

57. Hot metallic pattern is used in ----- special casting process

Shell mould

58. Cylinder heads and connecting rods can be produced in ---- special casting

Shell mould

59. Pattern material in investment casting ---

Wax

60. Complex shapes with close dimensions can be obtained in -----

Investment casting

61. Investment casting finds application in ----- industries

All

62. The die casting in which molten metal fills the cavity by gravity is

Permanent Die

63. Automobile engine pistons are widely produced by ---

Permanent Die

64. Injection moulding is ---- type of casting

Pressure Die

65. The casting process that produces hollow castings without core -

Centrifugal

66. All types of materials can be processed by ---- casting

Sand casting

67. Hot chamber Die casting is used for ----- material.

Zinc

68. Most of the automobile parts are produced by ---- casting

Pressure Die

69. True Centrifugal casting is used to produce -----

Hollow cylinder

70. The casting process in which mould is rotated is ---

Centrifugal

71. High density and high mechanical properties are possible in ----

Centrifugal

72. Pulley and gear blanks are widely produced by ---- casting

Semi centrifugal

73. Decorative hollow products are produced by ---- casting

Slush

74. The casting process in which molten metal in the mould is allowed to solidify for a thickness and remaining metal is drained off ---

Slush casting

75. The casting process in which total material poured is converted into casting ----

True Centrifugal

76. ------ casting technique is used to make hollow chocolate figures

Slush

77. The mould material in Plaster mould casting ---

Plaster of Paris

78. Any intermediate flask used in moulding practice, it is called ---

Cheek

79. -------- pattern is used in machine moulding.

Machplate

80. ------ pattern is used for making very large castings.

Skeleton

81. In pattern allowances, the allowance which reduces the size of the pattern ( -ve allowance) is

Rapping

82. In pattern allowances, the allowance which increases the size of the pattern (+ve allowance )

All

83. For ferrous castings the size of the sand grains used in moulding

Large

84. The property of the moulding sand which allows the gases to escape.

Permeability

85. The property of the moulding sand which makes mould to break easily.

Collapsibility

86. For bonding the sand grains in core making ---- is used.

Oils

87. In shell moulding the sand is mixed with ---- to make shells.

Thermosetting Resins

88. Strainer core is kept at ---- in gating elements

Sprue top

89. Cooling rate of riser should be ----- than casting.

Lower

90. Rate of cooling of casting depends on -----

Surface Area/volume

91. The pattern colour code for core prints seats ---

Yellow

92. The gating system for providing best filling of mould cavity ---

Parting Gate

93. Sprue is made tapered to ------

Avoid Aspiration

94. To avoid aspiration ----- gating system is provided.

Pressurized

95. Slag trapping is possible with ----- type of gating system.

Pressurized

96. Thumbling barrel is for --- in casting process.

Cleaning

97. The equipment to mix moulding sand is -

Muller

98. Poor permeability of moulding sand leads to ---- defect in casting

All

99. ------ is a pouring metal defect.

Mis Run

100. Jolting machines provide ----- in moulding flask.

Hard Bottom