MCQOPTIONS
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MCQOPTIONS
This section includes 7 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. |
A tensile test was conducted on mild steel bar. The load at elastic limit was 250kN and the diameter of the steel bar was 3cm. What will be the value of stress? |
| A. | 35368 x 10<sup>4</sup> N/m<sup>2</sup> |
| B. | 32463 x 10<sup>4</sup> N/m<sup>2</sup> |
| C. | 35625 x 10<sup>4</sup> N/m<sup>2</sup> |
| D. | 37562 x 10<sup>4</sup> N/m<sup>2</sup> |
| Answer» B. 32463 x 10<sup>4</sup> N/m<sup>2</sup> | |
| 2. |
What will be the minimum diameter of a steel wire, which is used to raise a load of 4000N if the stress in the rod is not to exceed 95 MN/m2? |
| A. | 6mm |
| B. | 6.4mm |
| C. | 7mm |
| D. | 7.3mm |
| Answer» E. | |
| 3. |
The stress in a rod is 70 N/mm2 and the modulus of elasticity is 2 x 105 N/mm2. what will be the strain in the rod? |
| A. | 0.00052 |
| B. | 0.00035 |
| C. | 0.00030 |
| D. | 0.00047 |
| Answer» C. 0.00030 | |
| 4. |
The phenomenon of slow growth of strain under a steady tensile stress is called ____________ |
| A. | Yielding |
| B. | Creeping |
| C. | Breaking |
| D. | None of the mentioned |
| Answer» C. Breaking | |
| 5. |
In a tensile test, near the elastic limit zone ____________ |
| A. | Tensile stress increases in linear proportion to the stress |
| B. | Tensile stress increases at a faster rate |
| C. | Tensile stress decreases at a faster rate |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 6. |
When equal and opposite forces applied to a body, tend to elongate it, the stress so produced, is called ____________ |
| A. | Shear stress |
| B. | Compressive stress |
| C. | Tensile stress |
| D. | Transverse stress |
| Answer» D. Transverse stress | |
| 7. |
During a tensile test on a ductile material ____________ |
| A. | Nominal stress at fracture is higher than the ultimate stress |
| B. | True stress at fracture is higher than the ultimate stress |
| C. | True stress a fracture is the same as the ultimate stress |
| D. | None of the mentioned |
| Answer» C. True stress a fracture is the same as the ultimate stress | |