MCQOPTIONS
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MCQOPTIONS
This section includes 15 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. |
Tensile strength increases with increasing ______ |
| A. | Temperature |
| B. | Molecular weight |
| C. | Purity |
| D. | Grain size |
| Answer» C. Purity | |
| 2. |
Brinell hardness of a steel specimen is 151 HBN. Give the value of UTS of Steel in psi. |
| A. | 520 psi |
| B. | 42050 psi |
| C. | 75500 psi |
| D. | 86200 psi |
| Answer» D. 86200 psi | |
| 3. |
If the Brinell hardness of a steel specimen is measured 149 HBN. What will be the UTS? |
| A. | 431 MPa |
| B. | 514 MPa |
| C. | 608 MPa |
| D. | 637 MPa |
| Answer» C. 608 MPa | |
| 4. |
Tensile strength is used as a design criterion for ductile materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
TENSILE_STRENGTH_IS_USED_AS_A_DESIGN_CRITERION_FOR_DUCTILE_MATERIALS.?$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 6. |
Brinell hardness of a steel specimen is 151 HBN. Give the value of UTS of Steel in psi.$ |
| A. | 520 psi |
| B. | 42050 psi |
| C. | 75500 psi |
| D. | 86200 psi |
| Answer» C. 75500 psi | |
| 7. |
If the Brinell hardness of a steel specimen is measured 149 HBN. What will be the UTS?$ |
| A. | 431 MPa |
| B. | 514 MPa |
| C. | 608 MPa |
| D. | 637 MPa |
| Answer» D. 637 MPa | |
| 8. |
Tensile strength depends on the molecular structure of the material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Find the minimum tensile strength of spring material ASTM A232 having diameter 3 millimeter, exponent m = 0.155 and constant A = 173 kpsi. |
| A. | 120 kpsi |
| B. | 146 kpsi |
| C. | 158 kpsi |
| D. | 167 kpsi |
| Answer» B. 146 kpsi | |
| 10. |
Which one of the following factor decreases the tensile strength? |
| A. | Cold working |
| B. | Alloying |
| C. | Temperature rise |
| D. | Grain refinement |
| Answer» D. Grain refinement | |
| 11. |
With an increase in the degree of cold working, tensile strength of material ______ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First decreases then increase |
| Answer» D. First decreases then increase | |
| 12. |
The ability of the material to withstand tensile force, without breaking, is known as ______ |
| A. | Yield strength |
| B. | Tensile strength |
| C. | Compressive strength |
| D. | Creep strength |
| Answer» B. Tensile strength | |
| 13. |
Which one of the following, is not a unit of ultimate tensile strength? |
| A. | MPa |
| B. | N/m<sup>2</sup> |
| C. | Kg/m<sup>3</sup> |
| D. | psi |
| Answer» C. Kg/m<sup>3</sup> | |
| 14. |
i-q, ii-p, iii-r, iv-s |
| A. | i-r, ii-p, iii-s, iv-q |
| B. | i-p, ii-r, iii-q, iv-s |
| C. | i-r, ii-p, iii-q, iv-s |
| Answer» D. | |
| 15. |
What is tensile strength of brass? |
| A. | 550 MPa |
| B. | 220 MPa |
| C. | 350 MPa |
| D. | 760 MPa |
| Answer» B. 220 MPa | |