Lattice Strain MCQ’s

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This set of Materials Science Multiple Choice Questions & Answers (MCQs) focuses on “Lattice Strain”.

1. When atoms are deformed approximately what fraction of deformation energy is retained internally?
a) 5%
b) 10%
c) 15%
d) 20%

2. For which of the following dislocation the strain is pure shear?
a) Screw dislocation
b) Jog dislocation
c) Mixed dislocation
d) Edge dislocation

3. Which of the following is not a lattice strain due to dislocation?
a) Tensile lattice strain
b) Compressive lattice strain
c) Shear lattice strain
d) Torsional lattice strain

4. Which of the following will decrease lattice strain?
a) Line defects
b) Point defects
c) Dislocation
d) Heating the material

5. Two edge dislocation on same slip plane and the same sign will ________
a) Exert attractive force
b) Exert no force
c) Exert repulsive force
d) Exert shearing force

6. Shear strains are observed in the vicinity of the edge dislocation.
a) True
b) False

7. How high can dislocation density of a material be when it is heavily deformed?
a) 1010 mm-2
b) 109 mm-2
c) 1011 mm-2
d) 1012 mm-2

8. Dislocation annihilation occurs when two dislocations of different signs meet each other on the same plane.
a) True
b) False

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