MCQOPTIONS
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MCQOPTIONS
This section includes 6 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. |
An unknown weight falls through a height of 10mm on a collar rigidly attached to a lower end of a vertical bar 500cm long. If E =200GPa what will be the value of stress? |
| A. | 50 N/mm<sup>2</sup> |
| B. | 60 N/mm<sup>2</sup> |
| C. | 70 N/mm<sup>2</sup> |
| D. | 80 N/mm<sup>2</sup> |
| Answer» E. | |
| 2. |
The maximum instantaneous extension, produced by an unknown falling weight through a height of 4cm in a vertical bar of length 3m and of cross section area 5cm2. what will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa? |
| A. | 1700 N |
| B. | 1459.4 N |
| C. | 1745.8 N |
| D. | 1947.5 N |
| Answer» D. 1947.5 N | |
| 3. |
The maximum instantaneous extension, produced by an unknown falling weight in a vertical bar of length 3m. what will be the instantaneous stress induced in the vertical bar and the value of unknown weight if E = 200GPa? |
| A. | 100 N/mm<sup>2</sup> |
| B. | 110 N/mm<sup>2</sup> |
| C. | 120 N/mm<sup>2</sup> |
| D. | 140 N/mm<sup>2</sup> |
| Answer» E. | |
| 4. |
A load of 100N falls through a height of 2cm onto a collar rigidly attached to the lower end of a vertical bar 1.5m long and of 105cm2 cross- sectional area. The upper end of the vertical bar is fixed. What is the strain energy stored in the vertical bar if E = 200GPa? |
| A. | 2.045 N-m |
| B. | 3.14 N-m |
| C. | 9.4 N-mm |
| D. | 2.14 N-m |
| Answer» B. 3.14 N-m | |
| 5. |
A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm2 in section. What will be the strain (E=210GPa)? |
| A. | 0.00089 |
| B. | 0.0005 |
| C. | 0.00064 |
| D. | 0.00098 |
| Answer» B. 0.0005 | |
| 6. |
A weight of 10kN falls by 30mm on a collar rigidly attached to a vertical bar 4m long and 1000mm2 in section. What will be the instantaneous stress (E=210GPa)? |
| A. | 149.4 N/mm<sup>2</sup> |
| B. | 179.24 N/mm<sup>2</sup> |
| C. | 187.7 N/mm<sup>2</sup> |
| D. | 156.1 N/mm<sup>2</sup> |
| Answer» D. 156.1 N/mm<sup>2</sup> | |