Composite Materials MCQ
1. What was the first commercial use of the liquid crystal polymer?
Answer
Correct Answer:
Aromatic polyester
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2. What type of reinforcement could be added to a LIQUID CRYSTAL POLYMER?
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3. What is a newer thermoplastic polymer?
Answer
Correct Answer:
LIQUID CRYSTAL POLYMER
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4. What is the subject of a nondestructive inspection?
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5. What is the term used to describe the liquid interface between a transducer and the subject of a nondestructive inspection?
Answer
Correct Answer:
LIQUID COUPLANT
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6. What is flax called when it is used to make fabric?
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7. What do people commonly curse flax for?
Answer
Correct Answer:
Wrinkling
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8. What is a linear expansion?
Answer
Correct Answer:
The increase of a given dimension
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9. What are the maximum loads anticipated on an aircraft during its service life?
Answer
Correct Answer:
Limit Loads
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10. What is the direction that is stronger for rods and tubes?
Answer
Correct Answer:
Lengthwise
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11. What are short threads tied around yarn to help keep them from tangling while being washed, dyed, and stored?
Answer
Correct Answer:
LEAS TIES
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12. What would a 4-lea skein weigh?
Answer
Correct Answer:
One pound
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13. What is the name for measuring linen yarns in 300 yard increments?
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14. What is a laminate that is made up of two or more different materials?
Answer
Correct Answer:
Layered laminate
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15. What is the use of the term "LAY"?
Answer
Correct Answer:
In glass fibre
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16. What is the orientation of a ribbon usually referenced to?
Answer
Correct Answer:
The axis of rotation
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17. What property do different plants produce different rubbers?
Answer
Correct Answer:
Properties
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18. What is another name for latex?
Answer
Correct Answer:
Hevea latex
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19. What is the most common term used to describe the several stable dispersions of resin particles?
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20. What kind of agent produces long-term stability at room temperature?
Answer
Correct Answer:
A curing agent
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21. What type of curing agent has stability at room temperature but rapid cure at elevated temperatures?
Answer
Correct Answer:
LATENT CURING AGENT
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22. What is the term for the last ply to failure of a composite laminate?
Answer
Correct Answer:
Ultimate failure
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23. What determines the last ply to failure of a composite laminate?
Answer
Correct Answer:
Fibre fracture
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24. What is normally used to make the adherends for the Lap Shear Test?
Answer
Correct Answer:
Aluminium alloy
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25. What material can be used in place of aluminium alloy adherends in the lapping test?
Answer
Correct Answer:
Composites
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26. What is a type of joint used in the construction of a knee?
Answer
Correct Answer:
LAP JOINT
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27. Overlay is used to what purpose?
Answer
Correct Answer:
Minimize gapping
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28. What is the LAP in filament winding?
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29. What is the process of laying up plywood from the tool face out called?
Answer
Correct Answer:
Lamination SEQUENCE
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30. What is the first material used to laminate a car?
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31. What is the process of preparing a laminate?
Answer
Correct Answer:
LAMINATION
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32. Along with fiber resin and resin, what can be used to describe Laminates?
Answer
Correct Answer:
Fabric-resin
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33. What is a LAMINATE PLY?
Answer
Correct Answer:
One fabric-resin or fibre-resin layer of product that is bonded to adjacent layers in the curing process
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34. What is one fabric-resin or fibre-resin layer of product that is bonded to adjacent layers in the curing process?
Answer
Correct Answer:
LAMINATE PLY
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35. What type of orientation do laminates have with respect to the angles of cross-plying?
Answer
Correct Answer:
The configuration of a cross-plied composite laminate
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36. What is the term for the configuration of a cross-plied composite laminate with regard to the angles of cross-plying?
Answer
Correct Answer:
LAMINATE ORIENTATION
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37. What is a common bonding material for laminae to be joined?
Answer
Correct Answer:
Pressure and heat
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38. What is LAMINATE used with reference to?
Answer
Correct Answer:
Flat sheets
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39. What makes up a laminate?
Answer
Correct Answer:
Two or more layers (plies) of material
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40. What is a product made by bonding together two or more layers (plies) of material?
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41. What is a LAMINA?
Answer
Correct Answer:
A single ply or layer in a laminate
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42. What type of composite materials are found in laminates?
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43. What are common ingredients used to make lacquer?
Answer
Correct Answer:
Natural or synthetic resins
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44. What is the primary purpose of lacquer?
Answer
Correct Answer:
Protective coating
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45. What type of knot is used to join two roving strands?
Answer
Correct Answer:
The knot is generally a reduced triple loop surgeon’s knot, square knot or overhand knot
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46. What is the general term for the means of joining strands of two doffs of roving?
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47. What is another name for KNOP?
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48. What term describes a group of fibres appearing along a yarn
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49. What is a KNITTED FABRIC structure?
Answer
Correct Answer:
A textile structure produced by interlooping one or more ends of yarn or comparable material
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50. What type of fabric is produced by interlooping one or more ends of yarn or comparable material?
Answer
Correct Answer:
KNITTED FABRIC
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51. With what process is KNIT interlocked?
Answer
Correct Answer:
Stitching process
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52. What type of machine does the knitting process use?
Answer
Correct Answer:
Needles or wires
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53. What is a KINK?
Answer
Correct Answer:
A yarn that has doubled back on itself to form a loop in the yarn
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54. What is another name for Kevlar?
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55. What is the Du Pont company name for an aramid fiber?
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56. What is the name of the width of a cut made by a saw blade, torch, water jet, laser beam, etc.?
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57. What does KEMP not do?
Answer
Correct Answer:
Take a dye
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58. A term used to describe the fiber found near the head and legs of sheep, what is its name?
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59. What is Kapton known as when sold by DuPont?
Answer
Correct Answer:
Du Pont Trade Name for Polyimide Film
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60. What does Kapton resist?
Answer
Correct Answer:
Hydraulic fluids
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61. What does the K factor measure?
Answer
Correct Answer:
The coefficient of thermal conductivity
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62. What is the K Factor used to measure?
Answer
Correct Answer:
Thermal conductivity
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63. What is the term for a structure at which two parts are held together with a layer of adhesive?
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64. JOGGLE is another word for what?
Answer
Correct Answer:
The projecting or retreating surface of a formed part, or the section of a tool that forms a joggle
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65. What is another term for finish?
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66. What is the boundary or surface between two different, distinguishing media called?
Answer
Correct Answer:
INTERFACE
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67. Integrally Heated refers to tooling that is self heating by means of what?
Answer
Correct Answer:
Electrical heaters
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68. Integrally heated tooling means that the tooling itself has its own built in heaters, similar to what?
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69. What term refers to tooling that is self-heating?
Answer
Correct Answer:
Integrally heated
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70. What is a common example of a structure that is not assembled by mechanical fasteners?
Answer
Correct Answer:
Composite structure
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71. What is a common example of a composite structure not assembled by mechanical fasteners?
Answer
Correct Answer:
Spars, ribs, and one stiffened cover of a wing box
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72. What term is sometimes applied more loosely to composite structures not assembled by mechanical fasteners?
Answer
Correct Answer:
Integral COMPOSITE STRUCTURE
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73. What is the electrical conductivity of an insulator?
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74. What is the name of a material of low electrical conductivity?
Answer
Correct Answer:
INSULATOR
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75. What is the name of the ASTM standard that deals with insert?
Answer
Correct Answer:
ASTM C 274
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76. Elements or compounds that are not organic is called what?
Answer
Correct Answer:
Inorganic
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77. What does the term injection moulding mean?
Answer
Correct Answer:
Forming a plastic to the desired shape
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78. What type of compounds are used in free-radical polymerizations?
Answer
Correct Answer:
Peroxides or Azo compounds
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79. What type of polymerization requires the use of free-radical initiators?
Answer
Correct Answer:
Free-radical polymerizations
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80. What do inhibitors slow down?
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81. A material added to a resin to slow down curing; also used in certain types of monomers and resins to what?
Answer
Correct Answer:
Prolong storage life
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82. What are infrared heaters used for in the thermoforming and curing of plastics and composites?
Answer
Correct Answer:
Infrared analysis
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83. What are infrared heaters frequently used for?
Answer
Correct Answer:
Thermoforming and curing of plastics and composites
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84. What property of a plastic can be changed by an inert filler?
Answer
Correct Answer:
End-item properties
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85. What is added to a plastic to alter its end-item properties?
Answer
Correct Answer:
INERT FILLER
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86. What does "inert atmosphere" mean?
Answer
Correct Answer:
The use of a gas (usually nitrogen) instead of air
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87. What does the use of gas instead of air to pressurize an autoclave primarily do?
Answer
Correct Answer:
Fire prevention
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88. What kind of discontinuity is an inclusion?
Answer
Correct Answer:
Physical and mechanical
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89. What does an inclusion consist of?
Answer
Correct Answer:
Solid, encapsulated foreign material
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90. What term is used to describe a discontinuity occurring within a material or part?
Answer
Correct Answer:
INCLUSION
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91. What type of device is an impregnator?
Answer
Correct Answer:
Mechanical
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92. What is the term for the process of impregnating fabrics with resin?
Answer
Correct Answer:
IMPREGNATOR
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93. What is a fabric impregnated with?
Answer
Correct Answer:
Synthetic resin
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94. What material is used in the manufacture of fabric that has been impregnated with a synthetic resin?
Answer
Correct Answer:
IMPREGNATED FABRIC
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95. What type of resin can be used to impregnate fabrics?
Answer
Correct Answer:
Synthetic
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96. What does an impregnate do to reinforced plastics?
Answer
Correct Answer:
Saturate the reinforcement with a resin
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97. How does a material withstand shock loading?
Answer
Correct Answer:
Impact Strength
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98. What is the ability of a material to withstand?
Answer
Correct Answer:
Shock loading
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99. The amount of damage is also dependent on what?
Answer
Correct Answer:
Material properties, geometry, and velocity of imparter and superimposed static loads
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100. What is the main cause of damage from the projectiles?
Answer
Correct Answer:
Impact damage
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101. What type of material is on the heater blanket?
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102. What is the deflection temperature under load now called?
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103. What is a contrivance for absorption or transfer of heat away from a critical element or part?
Answer
Correct Answer:
HEAT SINK
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104. What is used as a heat sink?
Answer
Correct Answer:
Bulk graphite
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105. What is the deflection temperature now called?
Answer
Correct Answer:
HEAT DISTORTION POINT
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106. What does HEAT CLEANED mean to you?
Answer
Correct Answer:
A condition in which glass or other fibres are exposed to elevated temperatures
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107. What condition makes glass or fibers exposed to high temperatures?
Answer
Correct Answer:
HEAT CLEANED
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Automotive Engineering, Vehicle Engineering MCQs | Topic-wise
