MCQOPTIONS
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MCQOPTIONS
This section includes 16 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. |
Work hardening causes a decrease in yield strength of the material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Which one of the following, gives the relation between work hardening and yield strength of material? |
| A. | Δσy = Gbρ |
| B. | Δσy = Gb√ρ |
| C. | Δσy = G√ρb |
| D. | Δσy = Gρ√b |
| Answer» C. Δσy = G√ρb | |
| 3. |
Yield point phenomenon creates problems in deep drawing operations of sheet Steels. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which factor deteriorates yield strength? |
| A. | Cold working |
| B. | Annealing |
| C. | Work hardening |
| D. | Grain refinement |
| Answer» C. Work hardening | |
| 5. |
WHICH_FACTOR_DETERIORATES_YIELD_STRENGTH??$ |
| A. | Cold working |
| B. | Annealing |
| C. | Work hardening |
| D. | Grain refinement |
| Answer» C. Work hardening | |
| 6. |
Which one of the following, gives the relation between work hardening and yield strength of material?$ |
| A. | Δσ<sub>y</sub> = Gbρ |
| B. | Δσ<sub>y</sub> = Gb√ρ |
| C. | Δσ<sub>y</sub> = G√ρb |
| D. | Δσ<sub>y</sub> = Gρ√b |
| Answer» C. ‚âà√≠‚àö√Ü‚âà√¨‚àö√¢<sub>y</sub> = G‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ‚âà√¨‚àö√ñb | |
| 7. |
Yield_point_phenomenon_creates_problems_in_deep_drawing_operations_of_sheet_Steels.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
Work_hardening_causes_a_decrease_in_yield_strength_of_the_material. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Which material shows the yield point phenomenon? |
| A. | Copper |
| B. | Aluminium |
| C. | Steel |
| D. | Silver |
| Answer» D. Silver | |
| 10. |
With decreasing grain size, yield strength of material ________ |
| A. | Increases |
| B. | Decreases |
| C. | Remains constant |
| D. | First increases then decrease |
| Answer» E. | |
| 11. |
As the temperature of a material is lowered, the yield stress _____ and the fracture stress _____ |
| A. | Increases, increases |
| B. | Increases, decreases |
| C. | Decreases, increases |
| D. | Decreases, decreases |
| Answer» C. Decreases, increases | |
| 12. |
_____ is the maximum stress that can be applied to the material without causing plastic deformation. |
| A. | Tensile strength |
| B. | Fatigue strength |
| C. | Compressive strength |
| D. | Yield strength |
| Answer» E. | |
| 13. |
Strain offset of _____ is commonly used. |
| A. | 0.002 |
| B. | 0.004 |
| C. | 0.006 |
| D. | 0.008 |
| Answer» B. 0.004 | |
| 14. |
What is SI unit of yield strength? |
| A. | N |
| B. | N/m<sup>2</sup> |
| C. | Nm<sup>2</sup> |
| D. | g/cm<sup>2</sup> |
| Answer» C. Nm<sup>2</sup> | |
| 15. |
What is yield strength of annealed titanium? |
| A. | 130 MPa |
| B. | 138 MPa |
| C. | 450 MPa |
| D. | 830 MPa |
| Answer» D. 830 MPa | |
| 16. |
What is yield strength of Kevlar? |
| A. | 1650 MPa |
| B. | 1737 MPa |
| C. | 3620 MPa |
| D. | 3757 MPa |
| Answer» B. 1737 MPa | |