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. |
Cast materials have lesser fatigue life than wrought materials. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
What is term referred to fatigue failure resulting from the strains caused by expansion and contraction in thermal cycling? |
| A. | Low cycle fatigue |
| B. | High cycle fatigue |
| C. | Corrosion fatigue |
| D. | Thermal fatigue |
| Answer» E. | |
| 3. |
When fatigue occurs above __ cycles, it is called high cycle fatigue. |
| A. | 10 |
| B. | 103 |
| C. | 106 |
| D. | 108 |
| Answer» C. 106 | |
| 4. |
_____ decrease fatigue life of a structure. |
| A. | Round holes |
| B. | Smooth transitions |
| C. | Fillets |
| D. | Square holes |
| Answer» E. | |
| 5. |
Which material doesn’t show fatigue limit? |
| A. | Titanium alloys |
| B. | Aluminium |
| C. | Stainless steel |
| D. | High Strength Steel |
| Answer» C. Stainless steel | |
| 6. |
WHEN_FATIGUE_OCCURS_ABOVE____CYCLES,_IT_IS_CALLED_HIGH_CYCLE_FATIGUE.?$ |
| A. | 10 |
| B. | 103 |
| C. | 106 |
| D. | 108 |
| Answer» C. 106 | |
| 7. |
Cast materials have lesser fatigue life than wrought materials.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 8. |
What is term referred to fatigue failure resulting from the strains caused by expansion and contraction in thermal cycling?$ |
| A. | Low cycle fatigue |
| B. | High cycle fatigue |
| C. | Corrosion fatigue |
| D. | Thermal fatigue |
| Answer» E. | |
| 9. |
High fatigue strength materials are the better choice than corrosion resistant materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 10. |
_____ decrease fatigue life of a structure? |
| A. | Round holes |
| B. | Smooth transitions |
| C. | Fillets |
| D. | Square holes |
| Answer» E. | |
| 11. |
Which steel would you choose for Cyclic stress application? |
| A. | Martensitic stainless steel |
| B. | Ferritic stainless steel |
| C. | Austenitic stainless steel |
| D. | Duplex steel |
| Answer» D. Duplex steel | |
| 12. |
Fatigue fracture consists _____ |
| A. | Cleavage |
| B. | Strains |
| C. | Striations |
| D. | Cracks |
| Answer» D. Cracks | |
| 13. |
What is the maximum endurance limit of aluminium? |
| A. | 97 MPa |
| B. | 130 MPa |
| C. | 170 MPa |
| D. | 290 MPa |
| Answer» C. 170 MPa | |
| 14. |
Which material doesn’t show fatigue limit?$ |
| A. | Titanium alloys |
| B. | Aluminium |
| C. | Stainless steel |
| D. | High Strength Steel |
| Answer» C. Stainless steel | |
| 15. |
What is the approximate ratio of fatigue strength to the tensile strength? |
| A. | 1:2 |
| B. | 1:3 |
| C. | 1:4 |
| D. | 2:1 |
| Answer» B. 1:3 | |
| 16. |
What decreases fatigue strength? |
| A. | Shot peening |
| B. | Case hardening |
| C. | Inclusions |
| D. | Grain refinement |
| Answer» D. Grain refinement | |
| 17. |
_____ of material can be defined as its ability to resist a fluctuating or repetitive stress. |
| A. | Creep strength |
| B. | Fatigue strength |
| C. | Impact strength |
| D. | Tensile strength |
| Answer» C. Impact strength | |