Structures and Properties of Materials MCE132 Measuring Devices Quiz
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Questions and Answers

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

  • Measuring the strain within a certain gauge length
  • Measuring the output voltage when the metallic part moves across a magnetic field
  • Measuring the small movements or deformations of the test specimens (correct)
  • Measuring the axial deformations of axially loaded elements

    • What does an electrical strain gauge measure?

  • The axial deformations of axially loaded elements
  • The small movements or deformations of the test specimens
  • The small deformations within a certain gauge length (correct)
  • The output voltage when the metallic part moves across a magnetic field

    • How does an LVDT work?

  • By measuring the electric resistance changes proportionally with strain
  • By measuring the axial deformations of axially loaded elements
  • By measuring the small movements or deformations of the test specimens
  • By measuring the output voltage when the metallic part moves across a magnetic field (correct)

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

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

    What is the role of an extensometer in laboratory testing devices?

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

    What is the main aim of using measuring devices in the context of the provided text?

    <p>To determine the load-deformation relationship for calculating material mechanical properties</p> Signup and view all the answers

    What is the function of testing machines as described in the text?

    <p>To apply the load on the test specimen and measure this load with the required accuracy</p> Signup and view all the answers

    What is the purpose of dial gauges in laboratory testing devices?

    <p>To measure the deflection or deformation of different elements</p> Signup and view all the answers

    What is the characteristic feature of most dial gauges according to the provided text?

    <p>They have two scales</p> Signup and view all the answers

    Which device is used to attach two points for measuring relative movement according to the text?

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

    Study Notes

    Laboratory Testing Devices

    • LVDT (Linear Variable Differential Transformer) is used to measure displacement, position, and pressure in laboratory testing devices.

    Measurement Devices

    • Electrical strain gauge measures the deformation of a material under stress.
    • The purpose of a strain gauge in laboratory testing devices is to measure the deformation of materials.

    Extensometer

    • The role of an extensometer in laboratory testing devices is to measure the change in length of a material.

    Measuring Devices

    • The main aim of using measuring devices in laboratory testing is to accurately measure the physical properties of materials under different conditions.

    Testing Machines

    • The function of testing machines is to apply a controlled force to a material to measure its mechanical properties.

    Dial Gauges

    • The purpose of dial gauges in laboratory testing devices is to measure small displacements or movements.
    • The characteristic feature of most dial gauges is that they have a circular dial with a pointer that moves over a calibrated scale.

    Relative Movement Measurement

    • An extensometer is used to attach two points for measuring relative movement.

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    Description

    Test your knowledge on the structures and properties of materials, focusing on the use of measuring devices such as testing machines, dial gauges, LVDT, strain gauges, and proving rings. Explore the aim and importance of using measuring devices in determining load-deformation relationships and calculating material mechanical properties.

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