MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Strength of Materials knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is true if the value of Poisson s ratio is zero? |
| A. | The material is rigid |
| B. | The material is perfectly plastic |
| C. | The longitudinal strain in the material is infinite |
| D. | There is no longitudinal strain in the material |
| Answer» B. The material is perfectly plastic | |
| 2. |
The modulus of rigidity and the modulus of elasticity of a material are 80 GPa and 200 GPa. What will be the Poissons ratio of the material? |
| A. | 0.25 |
| B. | 0.30 |
| C. | 0.40 |
| D. | 0.50 |
| Answer» B. 0.30 | |
| 3. |
How many elastic constants does an isotropic, homogeneous and linearly elastic material have? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» E. | |
| 4. |
How the elastic constants E and K are related? |
| A. | E = 2K(1 2 ) |
| B. | E = 3K(1 2 ) |
| C. | E = 2K(1 ) |
| D. | E = K(1 2 ) |
| Answer» C. E = 2K(1 ) | |
| 5. |
The Youngs modulus of elasticity of a material is 2.5 times its modulus of rigidity. Then what will be its Poissons ratio? |
| A. | 0.25 |
| B. | 0.33 |
| C. | 0.50 |
| D. | 0.60 |
| Answer» B. 0.33 | |
| 6. |
Determine the Poissons ratio and bulk modulus of a material, for which Youngs modulus is 1.2 and modulus of rigidity is 4.8. |
| A. | 7 |
| B. | 8 |
| C. | 9 |
| D. | 10 |
| Answer» C. 9 | |
| 7. |
For a material, Youngs modulus is given as 1.2 x 105 and Poissons ratio 1/4. Calculate the bulk modulus. |
| A. | 0.7 x 10<sup>5</sup> |
| B. | 0.8 x 10<sup>5</sup> |
| C. | 1.2 x 10<sup>5</sup> |
| D. | 1.2 x 10<sup>5</sup> |
| Answer» C. 1.2 x 10<sup>5</sup> | |
| 8. |
What is the bulk modulus of elasticity? |
| A. | The ratio of shear stress to shear strain |
| B. | The ratio of direct stress to direct strain |
| C. | The ratio of volumetric stress to volumetric strain |
| D. | The ratio of direct stress to volumetric strain |
| Answer» E. | |
| 9. |
The Poissons ratio of a material is 0.3. what will be the ratio of Youngs modulus to bulk modulus? |
| A. | 1.4 |
| B. | 1.2 |
| C. | 0.8 |
| D. | 0.6 |
| Answer» C. 0.8 | |
| 10. |
A circular rod of dia 30 mm and length 200mm is extended to 0.09mm length and 0.0045 diameters through a tensile force. What will be its Poissons ratio? |
| A. | 0.30 |
| B. | 0.31 |
| C. | 0.32 |
| D. | 0.33 |
| Answer» E. | |