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MCE132 Basic Properties of Engineering Materials Quiz
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MCE132 Basic Properties of Engineering Materials Quiz

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Questions and Answers

What do mechanical properties of materials describe?

  • The origin of materials under different types of loads
  • The behavior of materials under different types of loads (correct)
  • The weight of materials under different types of loads
  • The color of materials under different types of loads

    • Which type of loading involves a force applied rapidly causing an impact?

  • Static Loading
  • Dynamic Loading (correct)
  • Repeated Loading
  • Delayed Loading

    • What is stress in the context of mechanical properties of materials?

  • The temperature of the material
  • The length of the material
  • The intensity of internal forces (correct)
  • The volume of the material

    • What is strain in the context of mechanical properties of materials?

    <p>A dimensionless value representing the change in length relative to the original length</p> Signup and view all the answers

    Which type of loading involves a force applied repeatedly, causing variation in the magnitude and sometimes the direction of internal forces?

    <p>Repeated Loading</p> Signup and view all the answers

    What are the units for stress typically expressed in?

    <p>$N/mm^2$ (MPa)</p> Signup and view all the answers

    What is the definition of normal stress?

    <p>Stress normal to the section, could be tension or compression stress</p> Signup and view all the answers

    How is strength of a material measured?

    <p>By the maximum stress</p> Signup and view all the answers

    What is the point in the stress-strain curve where plastic deformation begins?

    <p>Yield or proof stress</p> Signup and view all the answers

    What is elasticity defined as?

    <p>Ability of a material to return to its original shape and dimensions after removing the applied load</p> Signup and view all the answers

    What is stiffness a measure of?

    <p>Resistance to deformations</p> Signup and view all the answers

    What is Poisson's ratio?

    <p>The ratio between lateral strain and axial strain</p> Signup and view all the answers

    What does ductility measure?

    <p>% Reduction in area in Tension test of steel</p> Signup and view all the answers

    What characterizes brittle materials?

    <p>Failure almost without deformations</p> Signup and view all the answers

    What does hardness measure?

    <p>Resistance to any indentation or scratch caused by any type of load</p> Signup and view all the answers

    What is shear stress?

    <p>Stress parallel to the section.</p> Signup and view all the answers

    What type of loading involves a force applied slowly to an assembly or object?

    <p>Static Loading</p> Signup and view all the answers

    What is the unit of stress typically expressed in?

    <p>$N/mm^2 (MPa)$</p> Signup and view all the answers

    What is the measure of the intensity of internal forces?

    <p>Stress</p> Signup and view all the answers

    What is the ratio between the change of length to the original length called?

    <p>Strain</p> Signup and view all the answers

    Which type of loading involves a force applied repeatedly, causing variation in the magnitude and sometimes in the sense of the internal forces?

    <p>Repeated Loading</p> Signup and view all the answers

    What is the dimensionless value that is the ratio between the change of length to the original length?

    <p>Strain</p> Signup and view all the answers

    What is the definition of ductility?

    <p>The maximum percentage of deformation a material can undergo</p> Signup and view all the answers

    What does Poisson's ratio measure?

    <p>The ratio between lateral strain and axial strain</p> Signup and view all the answers

    Which type of loading involves a force applied rapidly causing an impact?

    <p>Dynamic loading</p> Signup and view all the answers

    What is the measure of the intensity of internal forces?

    <p>Stress</p> Signup and view all the answers

    What does hardness measure?

    <p>The material's surface resistance to indentation or scratch</p> Signup and view all the answers

    What is the dimensionless value that is the ratio between the change of length to the original length?

    <p>Poisson's ratio</p> Signup and view all the answers

    What characterizes brittle materials?

    <p>Failure without deformations</p> Signup and view all the answers

    8

    <p>What type of loading involves a force applied repeatedly, causing variation in the magnitude and sometimes in the sense of the internal forces?</p> Signup and view all the answers

    What is elasticity defined as?

    <p>Ability of a material to return to its original shape and dimensions after removing the applied load</p> Signup and view all the answers

    What is strain in the context of mechanical properties of materials?

    <p>The ratio between lateral strain and axial strain</p> Signup and view all the answers

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