MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a hollow steel tube is heated from a temperature of 25 C to 250 C then fid the expansion of tube if area of the cross section is 300mm ,length of tube=200mm and coefficient of thermal expansion is 10.8 x 10 per C. |
| A. | 1.22mm |
| B. | 0.486mm |
| C. | 0.878mm |
| D. | 1.52mm |
| Answer» C. 0.878mm | |
| 2. |
A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D . Find the dimension D if allowable stress is 110N/mm and considering combined effect of direct stress and bending stress. |
| A. | 15.8mm |
| B. | 14.35mm |
| C. | 17.9mm |
| D. | 18.1mm |
| Answer» C. 17.9mm | |
| 3. |
A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D . Find the dimension D if allowable stress is 110N/mm and considering only direct tensile stress. |
| A. | 4.7mm |
| B. | 6.8mm |
| C. | 13.95mm |
| D. | 3.4mm |
| Answer» E. | |
| 4. |
A curved beam with eccentricity 0.02D is loaded with 1kN.Centroidal radius=4D and inner and outer radii are 3.5D and 4.5D respectively. Area of cross section is 0.8D . Find the dimension D if allowable stress is 110N/mm .Considering only bending stress. |
| A. | 14.80mm |
| B. | 13.95mm |
| C. | 16.5mm |
| D. | 17.2mm |
| Answer» C. 16.5mm | |
| 5. |
If for a curved beam of trapezoidal cross section, radius of neutral axis is 89.1816mm and radius of centroidal axis is 100mm, then find the bending stress at inner fibre whose radius is 50mm. Area of cross section of beam is 7200mm and the beam is loaded with 100kN of load. |
| A. | 97.3 |
| B. | 95.8 |
| C. | 100.6 |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |