Yield Stress and Plastic Deformation Quiz
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Questions and Answers

Which of the following best defines yield stress?

  • The stress at which a material undergoes elastic deformation
  • The stress at which a material begins to function in a plastic manner (correct)
  • The stress at which a material exhibits permanent strain
  • The stress at which a material breaks

    • What happens to a material when it reaches its yield stress?

  • It exhibits permanent strain (correct)
  • It becomes brittle
  • It breaks
  • It undergoes elastic deformation

    • Why is a material with permanent deformation no longer suitable for its intended purpose?

  • Because it doesn't meet the required specifications (correct)
  • Because it breaks
  • Because it becomes brittle
  • Because it undergoes elastic deformation

    • Which of the following best describes the yield stress of a material?

    <p>The stress at which the material starts to deform permanently</p> Signup and view all the answers

    What is the significance of a 0.1% or 0.2% permanent strain in a material?

    <p>It shows that the material has undergone plastic deformation</p> Signup and view all the answers

    Why does a material with permanent deformation no longer serve its purpose?

    <p>It loses its strength</p> Signup and view all the answers

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