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 (A)</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 (A)</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 (C)</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 (C)</p> Signup and view all the answers

What does an extensometer measure in laboratory testing?

<p>Axial deformations of axially loaded elements (D)</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 (A)</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 (A)</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 (C)</p> Signup and view all the answers

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

<p>Extensometer (B)</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 (C)</p> Signup and view all the answers

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

<p>Strain Gauge (A)</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 (B)</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 (A)</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 (B)</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 (D)</p> Signup and view all the answers

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

<p>Calibrating dial gauges (C)</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 (D)</p> Signup and view all the answers

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