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. |
Fatigue failure only occurs if cyclic stress, tensile stress and plastic strain, all are present. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Fatigue cracks are easily detectable. |
| A. | True |
| B. | False |
| Answer» C. | |
| 3. |
Which zone covers beach markings? |
| A. | I zone |
| B. | II zone |
| C. | III zone |
| D. | IV zone |
| Answer» B. II zone | |
| 4. |
How many zones of failure are shown in car rear axle surface fracture? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 5. |
HOW_MANY_ZONES_OF_FAILURE_ARE_SHOWN_IN_CAR_REAR_AXLE_SURFACE_FRACTURE??$ |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» D. 4 | |
| 6. |
Fatigue cracks are easily detectable.$ |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which_zone_covers_beach_markings?$ |
| A. | I zone |
| B. | II zone |
| C. | III zone |
| D. | IV zone |
| Answer» B. II zone | |
| 8. |
Fatigue_failure_only_occurs_if_cyclic_stress,_tensile_stress_and_plastic_strain,_all_are_present. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
Which region is smoother and more lustrous? |
| A. | R |
| B. | S |
| C. | O |
| D. | G |
| Answer» B. S | |
| 10. |
The zone ________ is the area on which the final fracture occurs. |
| A. | O |
| B. | R |
| C. | S |
| D. | I |
| Answer» D. I | |
| 11. |
What is the example of repeated stress cycle? |
| A. | Axles |
| B. | Rotating shafts |
| C. | Machine carrying load |
| D. | Cantilever |
| Answer» D. Cantilever | |
| 12. |
What initiates the crack in fatigue? |
| A. | Cyclic stress |
| B. | Tensile stress |
| C. | Plastic strain |
| D. | Compressive stress |
| Answer» B. Tensile stress | |
| 13. |
What is a type of fatigue failure? |
| A. | Rupture |
| B. | Brittle fracture |
| C. | Ductile fracture |
| D. | De-cohesive |
| Answer» C. Ductile fracture | |
| 14. |
Fatigue failures occur on stresses _________ |
| A. | Above tensile strength |
| B. | Above fracture strength |
| C. | Below elastic limit |
| D. | Below tensile strength |
| Answer» D. Below tensile strength | |
| 15. |
________ % of engineering failures are fatigue failures. |
| A. | 10 |
| B. | 30 |
| C. | 50 |
| D. | 90 |
| Answer» E. | |
| 16. |
Failure of metals under fluctuating stress is known as __________ failure. |
| A. | Creep |
| B. | Fatigue |
| C. | Dynamic |
| D. | Tensile |
| Answer» C. Dynamic | |