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This section includes 8 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. |
The Prandtl-Reuss stress strain relation equation is used for _____________ |
A. | elastic material |
B. | ideal Plastic material |
C. | viscous material |
D. | elastic-plastic material |
Answer» E. | |
2. |
The levy mises stress-strain relation equation is used for _____________ |
A. | elastic material |
B. | ideal Plastic material |
C. | viscous material |
D. | elastic-plastic material |
Answer» B. ideal Plastic material | |
3. |
Octahedral stresses are the stresses acting on the faces of a three-dimensional octahedron which has the geometric property that the faces of the planes make equal angles with each of the three principal directions of stresses. |
A. | True |
B. | False |
Answer» B. False | |
4. |
Von-mises and Tresca yielding criteria applies to both the isotropic and anisotropic materials. |
A. | True |
B. | False |
Answer» C. | |
5. |
The greatest divergence in predicting the yield stress for distortion between the Tresca s criteria and Von-Mises criteria occurs at __________ |
A. | uniaxial tension/compression |
B. | balanced biaxial stress |
C. | pure shear stress |
D. | always predicts equal stress |
Answer» D. always predicts equal stress | |
6. |
The following diagram represents the equation 12+ 32 1 3 = o2 for the von-mises condition.
|
A. | n<img alt="The yield locus of Tresca criteria falls outside of Von-Mises criteria in given figure" class="alignnone size-full wp-image-265458" height="344" sizes="(max-width: 523px) 100vw, 523px" src="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-element-plasticity-theory-invariant-stress-strain-q3.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-element-plasticity-theory-invariant-stress-strain-q3.png 523w, https://www.sanfoundry.com/wp-content/uploads/2020/01/mechanical-metallurgy-questions-answers-element-plasticity-theory-invariant-stress-strain-q3-300x197.png 300w" width="523"/> |
B. | The yield locus of Tresca criteria falls inside the of the Von-Mises criteria |
C. | Both the Von-Mises and Tresca s method predicts the same yield stress for uniaxial stress |
D. | Both the Von-Mises and Tresca s method predicts the same yield stress for balance biaxial stress |
E. | The yield locus of Tresca criteria falls outside the of the Von-Mises criteria |
Answer» E. The yield locus of Tresca criteria falls outside the of the Von-Mises criteria | |
7. |
For the biaxial plane stress condition, the von Mises yield criteria can be expressed as:
|
A. | nThe above equation physically represents _________ |
B. | circle |
C. | straight line |
D. | ellipse |
E. | parabola |
Answer» D. ellipse | |
8. |
For the biaxial plane stress condition, the von Mises yield criteria can be expressed as ___________
|
A. | <sub>1</sub>+ <sub>3</sub> = <sub>o</sub> |
B. | <sub>1</sub><sup>2</sup>+ <sub>3</sub><sup>2</sup> <sub>1</sub> <sub>3</sub> = <sub>o</sub><sup>2</sup> |
C. | <sub>1</sub>+ <sub>3</sub> <sub>1</sub> <sub>3</sub> = <sub>o</sub><sup>2</sup> |
D. | <sub>1</sub>+ <sub>3</sub> <sub>1</sub> <sub>3</sub> = <sub>o</sub> |
Answer» C. <sub>1</sub>+ <sub>3</sub> <sub>1</sub> <sub>3</sub> = <sub>o</sub><sup>2</sup> | |