MCQOPTIONS
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MCQOPTIONS
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.The plot is known as the yield locus for Von-Mises criteria. Which of the following statement is not correct? |
| 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: 12+ 32 1 3= o2 |
| 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 ___________Given that principal stresses are 1, 2, 3 where 2=0 and yield stress is o. |
| 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> | |