MCQOPTIONS
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MCQOPTIONS
This section includes 17 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Behaviour knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The plane containing burgers vector and tangent vector allows glide of dislocation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
A prismatic loop has ____ character over the entire length. |
| A. | Edge |
| B. | Screw |
| C. | Mixed |
| D. | Edge and screw |
| Answer» B. Screw | |
| 3. |
Dislocation in loop form has the same Burgers vector and character at all positions. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
For a dislocation, Burgers vector _____ with varying position. |
| A. | Changes slowly |
| B. | Changes abruptly |
| C. | Changes with a constant rate |
| D. | Doesn’t change |
| Answer» E. | |
| 5. |
Relation E ∝ b2 is known as ______ |
| A. | Frank’s rule |
| B. | Burgers law |
| C. | Bauschinger effect |
| D. | Griffith law |
| Answer» B. Burgers law | |
| 6. |
FOR_A_DISLOCATION,_BURGERS_VECTOR_______WITH_VARYING_POSITION.?$ |
| A. | Changes slowly |
| B. | Changes abruptly |
| C. | Changes with a constant rate |
| D. | Doesn’t change |
| Answer» E. | |
| 7. |
A prismatic loop has ____ character over the entire length.$ |
| A. | Edge |
| B. | Screw |
| C. | Mixed |
| D. | Edge and screw |
| Answer» B. Screw | |
| 8. |
Dislocation_in_loop_form_has_the_same_Burgers_vector_and_character_at_all_positions.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
The_plane_containing_burgers_vector_and_tangent_vector_allows_glide_of_dislocation. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
What is the angle between the Burgers vector and the plane of the dislocation loop? |
| A. | 0° |
| B. | <90° |
| C. | 90° |
| D. | >90° |
| Answer» D. >90¬¨¬®‚Äö√†√ª | |
| 11. |
A dislocation loop can form by clustering of ______ |
| A. | Impurity atoms |
| B. | Vacancies |
| C. | Interstitials |
| D. | Gas atoms |
| Answer» C. Interstitials | |
| 12. |
Relation E ‚àù b2 is known as ______$ |
| A. | Frank’s rule |
| B. | Burgers law |
| C. | Bauschinger effect |
| D. | Griffith law |
| Answer» B. Burgers law | |
| 13. |
Elastic energy of a dislocation is _______ |
| A. | ‚àù b |
| B. | ‚àù b<sup>2</sup> |
| C. | ‚àù b<sup>3</sup> |
| D. | ‚àù ‚àöb |
| Answer» C. ‚Äö√Ñ√∂‚àö‚Ć‚àöœÄ b<sup>3</sup> | |
| 14. |
In perfect dislocations Burgers vector is ____ and in partial dislocation is ______ |
| A. | Translation vector, translation vector |
| B. | Translation vector, not a translation vector |
| C. | Not a translation vector, translation vector |
| D. | Not a translation vector, not a translation vector |
| Answer» C. Not a translation vector, translation vector | |
| 15. |
Burgers vector is a measure of the lattice distortion due to the presence of ____ |
| A. | Point defect |
| B. | Line defect |
| C. | Surface defect |
| D. | Volume defect |
| Answer» B. Line defect | |
| 16. |
For BCC Burgers vector is ____ and for FCC ____ |
| A. | a <hkl>, a <hkl> |
| B. | a <hkl>, (a/2) <hkl> |
| C. | (a/2) <hkl>, a <hkl> |
| D. | (a/2) <hkl>, (a/2) <hkl> |
| Answer» E. | |
| 17. |
A Burgers vector represents the extent of _____ |
| A. | Slip |
| B. | Elastic deformation |
| C. | Twinning |
| D. | Hardness |
| Answer» B. Elastic deformation | |