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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. | |