MCE132 Measuring Devices in Materials Engineering
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Questions and Answers

What is the main target of using measuring devices in the context of this text?

  • To analyze chemical properties
  • To measure temperature variations
  • To determine the load-deformation relationship (correct)
  • To calculate electrical resistance

    • Which device is used to apply the load on the test specimen and measure this load with the required accuracy?

  • Proving Rings
  • Load Cells (correct)
  • LVDT
  • Dial Gauges

    • What is the purpose of a dial gauge in the context of this text?

  • To analyze chemical properties
  • To measure temperature variations
  • To measure the deflection or deformation of different elements (correct)
  • To calculate electrical resistance

    • What type of testing machine is used for measuring tension and compression?

    <p>Universal testing machine</p> Signup and view all the answers

    Which device has two scales and is used to measure the deflection or deformation of different elements?

    <p>Dial Gauges</p> Signup and view all the answers

    What is the function of an LVDT in laboratory testing?

    <p>To measure the axial deformations of axially loaded elements</p> Signup and view all the answers

    What is the primary purpose of a strain gauge in laboratory testing?

    <p>To measure small deformations within a certain gauge length</p> Signup and view all the answers

    What does an extensometer measure in laboratory testing?

    <p>Axial deformations of axially loaded elements</p> Signup and view all the answers

    What is the purpose of the metallic part in an LVDT?

    <p>To obtain output voltage when moved across a magnetic field</p> Signup and view all the answers

    What are the advantages of using an electrical strain gauge over a mechanical dial gauge?

    <p>Small device and very high accuracy and precision</p> Signup and view all the answers

    What is the purpose of a strain gauge in laboratory testing?

    <p>To measure the electric resistance changes proportionally as the surface deforms</p> Signup and view all the answers

    Which device is used to measure the axial deformations of axially loaded elements?

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

    What is the main function of an LVDT in laboratory testing?

    <p>To measure the metallic part moving across a magnetic field</p> Signup and view all the answers

    Which device is used to detect the change in resistance as the surface deforms?

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

    What is the purpose of the metallic core in an LVDT?

    <p>To move across a magnetic field and generate an output voltage</p> Signup and view all the answers

    What is the role of a load cell in laboratory testing?

    <p>Applying the load on the test specimen and measuring this load with the required accuracy</p> Signup and view all the answers

    Which type of testing machine is designed for applying load in a bending test?

    <p>Compression testing machine</p> Signup and view all the answers

    What is the primary function of an LVDT in laboratory testing?

    <p>Measuring the deformation of different elements</p> Signup and view all the answers

    What is the purpose of a proving ring in laboratory testing?

    <p>Calibrating dial gauges</p> Signup and view all the answers

    What is the main target of using dial gauges in laboratory testing?

    <p>Measuring the deflection of different elements</p> Signup and view all the answers

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