Importance of Studying Atomic Structure in Engineering Materials
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Questions and Answers

What is the electrical charge of a neutron?

  • 1.602 × 10-19 C
  • 0 C (correct)
  • -1.602 × 10-19 C
  • 1 C

Which subatomic particle has the smallest mass?

  • Proton
  • They all have the same mass
  • Electron (correct)
  • Neutron

What is the atomic mass of an atom?

  • Number of protons plus number of neutrons
  • Number of protons plus number of electrons (correct)
  • Number of protons
  • Number of electrons

Which subatomic particle is responsible for the atomic number of an atom?

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

How does atomic structure affect the properties and behavior of engineering materials?

<p>It affects the types of bonds in materials (B)</p> Signup and view all the answers

What is the maximum number of electrons that can be held in the third shell of an atom?

<p>18 (B)</p> Signup and view all the answers

Which bond type involves the transfer of electrons from one elemental atom to another, resulting in ions?

<p>Ionic bond (D)</p> Signup and view all the answers

What is the atomic number of uranium?

<p>92 (B)</p> Signup and view all the answers

What are the electrons in the outermost filled shell called?

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

What is Avogadro’s number?

<p>$6.023 \times 10^3$ (atoms/mole) (B)</p> Signup and view all the answers

What is the main target of using all the laboratory testing devices mentioned?

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

What is the function of a proving ring among the laboratory testing devices?

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

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

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

What is the role of an LVDT (Linear Variable Differential Transformer) in laboratory testing devices?

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

In which laboratory testing device are most gauges attached to frames or holders, and most have two scales?

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

What is the purpose of an LVDT?

<p>To measure small movements or deformations of test specimens (A)</p> Signup and view all the answers

What is the relationship between the core position and output voltage in an LVDT?

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

What is the main factor affecting the electric resistance of a strain gauge?

<p>The gauge's cross-sectional area (A)</p> Signup and view all the answers

In what scenario can a mechanical dial gauge be used?

<p>Reading measurements from both static and dynamic loads (B)</p> Signup and view all the answers

What is the function of the non-magnetic shell in an LVDT?

<p>To contain the primary and secondary electric coils (A)</p> Signup and view all the answers

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