MCQOPTIONS
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This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
To determine the creep rate, the curve is plotted between the _________ |
| A. | stress-strain |
| B. | stress-time |
| C. | strain-time |
| D. | strain- temperature |
| Answer» D. strain- temperature | |
| 2. |
The progressive deformation of the material at constant stress is called __________ |
| A. | fatigue |
| B. | fracture |
| C. | creep |
| D. | rupture |
| Answer» D. rupture | |
| 3. |
Which of the following material has the highest damping capacity? |
| A. | Steel |
| B. | Brass |
| C. | Cast iron |
| D. | Stainless steel |
| Answer» D. Stainless steel | |
| 4. |
The damping capacity of the material depends on the frequency of the vibration. It is not a material property. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
The internal friction studies are generally conducted at ______ stress and ______ strains. |
| A. | low, small |
| B. | high, small |
| C. | low, large |
| D. | high, large |
| Answer» B. high, small | |
| 6. |
The internal energy dissipation at larger stresses and strains are generally called ____________ |
| A. | vibration |
| B. | damping |
| C. | stored energy |
| D. | extra energy |
| Answer» C. stored energy | |
| 7. |
The measure of the internal friction is the fractional decrease in ____________ per cycle. |
| A. | stress amplitude |
| B. | strain amplitude |
| C. | vibrational energy |
| D. | hysteresis loss |
| Answer» D. hysteresis loss | |
| 8. |
With anelastic behavior of the material, the stress and strain are out of phase during cyclic loading and unloading. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 9. |
In the polymers, the energy dissipation and the anelastic behavior is caused by _________ |
| A. | elastic effect |
| B. | grain boundary sliding |
| C. | motion of dislocation |
| D. | bond rotation |
| Answer» E. | |
| 10. |
The thermo-elastic behavior is the only cause of anelastic effect and the elastic hysteresis loop on stress-strain curve. |
| A. | True |
| B. | False |
| Answer» C. | |