Engineering Materials Quiz! Trivia Questions Test

38 Questions | Total Attempts: 38

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Engineering Materials Quiz! Trivia Questions Test

In the world of engineering, the most commonly used materials are plastics and metals. If you are on the journey of becoming an engineer, you are expected to be conversant with the materials and tools you will use or come across. How about you test your memory and understanding by taking the challenging quiz below. All the best as you tackle it!


Questions and Answers
  • 1. 
    An accelerator is mixed with the: 
    • A. 

      Catalyst first before mixing it into the resin

    • B. 

      Resin before adding the catalyst

    • C. 

      Resin after the catalyst has been mixed into it

  • 2. 
    A problem experienced when drilling aramids is that the: 
    • A. 

      Ends of the fibres "fuzz" the edges of the hole

    • B. 

      Hole tends to be oversized

    • C. 

      Drill quickly overheats and blunts

  • 3. 
    When annealing a 2XXX series aluminum alloy, it should be cooled: 
    • A. 

      Rapidly by quenching in cold water.

    • B. 

      In air or by quenching

    • C. 

      At a slow controlled rate.

  • 4. 
    Quantum mechanics does NOT use which of the following to study atoms. 
    • A. 

      Probability theories

    • B. 

      Energy levels

    • C. 

      Shell strengths

  • 5. 
    Titanium is used in the Aerospace industry because of its? 
    • A. 

      Excellent strength at high temperature

    • B. 

      Excellent hardness at high temperature

    • C. 

      Excellent weldability at high temperature

  • 6. 
    Why is it necessary to use flux in all silver soldering operations? 
    • A. 

      To chemically clean the base metal of oxide film

    • B. 

      To prevent overheating of the base metal

    • C. 

      To increase heat conductivity

  • 7. 
    Two molecules having the same composition but different configurations are called? 
    • A. 

      Polymers

    • B. 

      Multimers

    • C. 

      Isomers

  • 8. 
    Which of the following additive is added to a coating to control the gloss and adjust the viscosity? 
    • A. 

      Antiskin

    • B. 

      Extender

    • C. 

      Catalyst

  • 9. 
    A pictorial representation of critical heat-treating temperatures is called a? 
    • A. 

      Cycle diagram

    • B. 

      Alloy absorption diagram

    • C. 

      Phase diagram

  • 10. 
    Fretting corrosion is most likely to occur 
    • A. 

      When two surfaces fit tightly together but can move relative to one another

    • B. 

      Only when two dissimilar metals are in contact

    • C. 

      When two surfaces fit loosely together and can move relative to one another

  • 11. 
    Tungsten and chromium will harden carbon steel by: 
    • A. 

      Dissolving in ferrite and creating a fine grain structure

    • B. 

      Distorting the grain structure

    • C. 

      Reacting with carbon and forming carbide

  • 12. 
    Which of the following iron ores contains the most percentage of iron? 
    • A. 

      Magnetite.

    • B. 

      Hermatite.

    • C. 

      Taconite.

  • 13. 
    Which of the following describes the creep condition? 
    • A. 

      Slow breakdown of plastic material subjected to repeated normal loads over extended period

    • B. 

      Slow stretching of a plastic material subjected to a tensile load over time

    • C. 

      Rapid breakdown of a plastic material subjected to repeated normal loads over extended period

  • 14. 
    The temperatures and times to be used for the heat treatment of metals are: 
    • A. 

      Contained in heat treatment tables issued by the standards authority.

    • B. 

      Contained in the material specification sheet

    • C. 

      Marked on the material as a temper code

  • 15. 
    The type of corrosion mainly affecting extruded aluminium alloy components is: 
    • A. 

      Crevice corrosion

    • B. 

      Filiform corrosion

    • C. 

      Exfoliation corrosion

  • 16. 
    Sodium chloride is an example of which type of bonding? 
    • A. 

      Ionic bonding

    • B. 

      Covalent bonding

    • C. 

      Metallic bonding

  • 17. 
    What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects? 
    • A. 

      Residual

    • B. 

      Inductance

    • C. 

      Continuous

  • 18. 
    Alcad is a metal consisting of
    • A. 

      Aluminum alloy surface layers and a pure aluminum core

    • B. 

      Pure aluminum surface layers on an aluminum alloy core

    • C. 

      A homogenous mixture of pure aluminum and aluminum alloy

  • 19. 
    Oxidation in welds will NOT cause which of the following condition? 
    • A. 

      Difficulty in fusion

    • B. 

      Inclusion in joints

    • C. 

      Increase in ductility

  • 20. 
    According to SAE and AISI, what is the percentage of carbon in 8620 steel? 
    • A. 

      0.8%

    • B. 

      0.6%

    • C. 

      0.2%

  • 21. 
    Which of the following is NOT a result of increasing carbon in steel?
    • A. 

      Decreased weldability

    • B. 

      Increase machinability

    • C. 

      Increased tensile strength

  • 22. 
    Which of the following method can produce 99.9% pure copper? 
    • A. 

      Smelting

    • B. 

      Flotation

    • C. 

      Electroplating

  • 23. 
    If the thickness of a beam is trebled its stiffness increases by a factor of: 
    • A. 

      3

    • B. 

      6

    • C. 

      9

  • 24. 
    The catalyst used for curing polyester resins is:
    • A. 

      Styrene based

    • B. 

      Peroxide based

    • C. 

      Epoxy based

  • 25. 
    The reheating of a heat-treated metal, such as with a welding torch.
    • A. 

      Has little or no effect on a metal's heat treated characteristics

    • B. 

      Has a cumulative enhancement effect on the original heat treatment

    • C. 

      Can significantly alter a metal's properties in the reheated

  • 26. 
    One of the advantages of inspecting an aluminum propeller utilising dye-penetrant inspection procedure is that: 
    • A. 

      Defects just below the surface are indicated

    • B. 

      It shows whether visible lines and other marks are actually cracks rather than scratches

    • C. 

      It indicates overspeed condition

  • 27. 
    Which of these converters will still contain many impurities after the steel is produced? 
    • A. 

      Bessemer converter

    • B. 

      Electric arc furnace

    • C. 

      Oxygen lance converter

  • 28. 
    Which of these materials is the most cathodic? 
    • A. 

      Zinc

    • B. 

      2024 aluminum alloy

    • C. 

      Stainless steel

  • 29. 
    Which of the following is NOT true of the alloying of Aluminum?
    • A. 

      Copper for machinability

    • B. 

      Carbon for weldability

    • C. 

      Silicon for casting

  • 30. 
    Microbiological growths in a fuel tank primarily cause: 
    • A. 

      Inter-granular corrosion in the tank floor

    • B. 

      Exfoliation corrosion on the tank floor.

    • C. 

      Shielding corrosion on the tank floor

  • 31. 
    Filiform corrosion around fasteners is recognised by: 
    • A. 

      Delamination of the surface layers.

    • B. 

      Crevices forming around the fasteners

    • C. 

      "worm-like" tracks under the paint

  • 32. 
    Alloys that are described as "refractories" will: 
    • A. 

      Maintain their mechanical properties at very high temperatures

    • B. 

      Lose their mechanical properties at very high temperatures

    • C. 

      Maintain their mechanical properties at very low temperatures

  • 33. 
    What is the major alloying element in the copper alloy called brass? 
    • A. 

      Phosphorus

    • B. 

      Tin

    • C. 

      Zinc

  • 34. 
    The aluminum alloys used in aircraft construction are usually hardened by which method? 
    • A. 

      Cold working

    • B. 

      Aging

    • C. 

      Heat treatment

  • 35. 
    A property of "Invar" steel is that it: 
    • A. 

      Has an extremely low coefficient of expansion.

    • B. 

      Has very high permeability.

    • C. 

      Self-hardens under mechanical pressure

  • 36. 
    A "step" curing process is carried out: 
    • A. 

      Automatically by a programmed controller

    • B. 

      By installing the repair in a vacuum bag

    • C. 

      Manually by an operator

  • 37. 
    A "step" curing process is carried out: 
    • A. 

      Automatically by a programmed controller

    • B. 

      By installing the repair in a vacuum bag

    • C. 

      Manually by an operator

  • 38. 
    Which of the following is NOT a type of bonding between atoms? 
    • A. 

      Ionic bond

    • B. 

      Lattice bond

    • C. 

      Van der Waals forces