MCQOPTIONS
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MCQOPTIONS
This section includes 6 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. |
Grain size strengthening can be understood by __________ |
| A. | Orowan mechanism |
| B. | Hall-Petch equation |
| C. | Schmid s law |
| D. | Bragg s law |
| Answer» C. Schmid s law | |
| 2. |
Grain refinement decreases ductility of the material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
The number of dislocations is directly proportional to ___ and inversely proportional to ___ |
| A. | Shear modulus, Burgers vector |
| B. | Shear modulus, Stress |
| C. | Stress, Shear modulus |
| D. | Burgers vector, Stress |
| Answer» D. Burgers vector, Stress | |
| 4. |
A material shows maximum strength when it consists of ____ dislocations. |
| A. | No |
| B. | Large number of |
| C. | Very less number of |
| D. | Intermediate number of |
| Answer» B. Large number of | |
| 5. |
Which property doesn t improve on grain refinement? |
| A. | Fatigue strength |
| B. | Tensile strength |
| C. | Hardness |
| D. | Creep strength |
| Answer» E. | |
| 6. |
Which factor doesn t promote fine grain structure? |
| A. | Fast cooling rates |
| B. | Inoculating agents |
| C. | Mechanical vibrations |
| D. | Longer holding times at high temperature |
| Answer» E. | |