MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Materials Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What are one-dimensional defects? |
| A. | Boundary defect |
| B. | Point defect |
| C. | Line defect |
| D. | Volume defect |
| Answer» D. Volume defect | |
| 2. |
Generation of dislocations can be identified using _______ |
| A. | Schottky mechanism |
| B. | Burger’s vector |
| C. | Twist |
| D. | Frank-Read mechanism |
| Answer» E. | |
| 3. |
In screw dislocation, the Burger’s vector lies _________ to the dislocation line. |
| A. | Perpendicular |
| B. | Parallel |
| C. | At an angle |
| D. | Sideways |
| Answer» C. At an angle | |
| 4. |
A disturbance in a region between two ideal parts of a crystal is known as ________ |
| A. | Boundary defect |
| B. | Point defect |
| C. | Line defect |
| D. | Volume defect |
| Answer» D. Volume defect | |
| 5. |
Which defect does the following diagram represent? |
| A. | Vacancy defect |
| B. | Schottky defect |
| C. | Frankel defect |
| D. | Interstitial defect |
| Answer» E. | |
| 6. |
Which defect does the following figure depict? |
| A. | Vacancy defect |
| B. | Schottky defect |
| C. | Frankel defect |
| D. | Interstitial defect |
| Answer» C. Frankel defect | |
| 7. |
IN_SCREW_DISLOCATION,_THE_BURGER‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ¬•S_VECTOR_LIES___________TO_THE_DISLOCATION_LINE?$# |
| A. | Perpendicular |
| B. | Parallel |
| C. | At an angle |
| D. | Sideways |
| Answer» C. At an angle | |
| 8. |
What are one-dimensional defects?$ |
| A. | Boundary defect |
| B. | Point defect |
| C. | Line defect |
| D. | Volume defect |
| Answer» D. Volume defect | |
| 9. |
Generation_of_dislocations_can_be_identified_using________$ |
| A. | Schottky mechanism |
| B. | Burger’s vector |
| C. | Twist |
| D. | Frank-Read mechanism |
| Answer» E. | |
| 10. |
How is the dislocation energy defined? |
| A. | J m<sup>-1</sup> |
| B. | J m<sup>-2</sup> |
| C. | m<sup>-2</sup> |
| D. | N m<sup>-1</sup> |
| Answer» B. J m<sup>-2</sup> | |
| 11. |
What are two-dimensional defects? |
| A. | Boundary defect |
| B. | Point defect |
| C. | Line defect |
| D. | Volume defect |
| Answer» B. Point defect | |
| 12. |
A disturbance in a region between two ideal parts of a crystal is known as _______? |
| A. | Boundary defect |
| B. | Point defect |
| C. | Line defect |
| D. | Volume defect |
| Answer» D. Volume defect | |
| 13. |
_______ occurs when a foreign substance replaces an atom in a crystal. |
| A. | Vacancy defect |
| B. | Substitutional impurity |
| C. | Frankel defect |
| D. | Interstitial impurity |
| Answer» C. Frankel defect | |
| 14. |
The defect that occurs due to a displacement of an ion is known as __________ |
| A. | Vacancy defect |
| B. | Schottky defect |
| C. | Frankel defect |
| D. | Interstitial defect |
| Answer» D. Interstitial defect | |
| 15. |
Which of the following is a point defect in crystals? |
| A. | Edge dislocation |
| B. | Interstitialcies |
| C. | Grain boundaries |
| D. | Cracks |
| Answer» C. Grain boundaries | |