Explore topic-wise MCQs in Materials Science.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Materials Science knowledge and support exam preparation. Choose a topic below to get started.

1.

Shear strains are observed in the vicinity of the edge dislocation.

A. True
B. False
Answer» B. False
Discussion
2.

Dislocation annihilation occurs when two dislocations of different signs meet each other on the same plane.

A. True
B. False
Answer» B. False
Discussion
3.

Shear strains are observed in the vicinity of the edge dislocation?

A. True
B. False
Answer» B. False
Discussion
4.

Dislocation annihilation occurs when two dislocations meet.

A. True
B. False
Answer» B. False
Discussion
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
Answer» D. Exert shearing force
Discussion
6.

How high can dislocation density of a material be when it is heavily deformed?

A. 10<sup>10</sup> mm<sup>-2</sup>
B. 10<sup>9</sup> mm<sup>-2</sup>
C. 10<sup>11</sup> mm<sup>-2</sup>
D. 10<sup>12</sup> mm<sup>-2</sup>
Answer» B. 10<sup>9</sup> mm<sup>-2</sup>
Discussion
7.

Which of the following will decrease lattice strain?

A. Line defects
B. Point defects
C. Dislocation
D. Heating the material
Answer» E.
Discussion
8.

For which of the following dislocation the strain is pure shear?

A. Screw dislocation
B. Jog dislocation
C. Mixed dislocation
D. Edge dislocation
Answer» B. Jog dislocation
Discussion
9.

When atoms are deformed approximately what fraction of deformation energy is retained internally?

A. 5%
B. 10%
C. 15%
D. 20%
Answer» B. 10%
Discussion
10.

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
Answer» E.
Discussion