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Machine Design 1: Design Against Fluctuating Load
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Machine Design 1: Design Against Fluctuating Load
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17 Questions

1. Stress concentration is defined as the localization of high stresses due to irregularities present in the component and no changes of the cross section.
2. A flat plate 30mm wide and “t”mm wide is subjected to a tensile force of 5kN. The plate has a circular hole of diameter 15mm with the centre coinciding with the diagonal intersection point of the rectangle. If stress concentration factor=2.16, find the thickness of the plate if maximum allowable tensile stress is 80N/mm².
3. The stress represented by sin (t) + 2 belongs to which category?
4. In which of the following case stress concentration factor is ignored?
5. The stress represented by sin (t) + 1 belongs to which category?
6. Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross-section and highest value of actual stress near discontinuity.
7. For an elliptical hole on a flat plate, if width of the hole in direction of the load decrease, Stress Concentration Factor will______
8. There is sufficient plastic deformation prior to fatigue failure, which gives a warning well in advance.
9. In which of the following case stress concentration factor is ignored?
10. Use of multiple notches in a V shaped flat plate will
11. The stress represented by sin (t) + 4 belongs to which category?
12. If a flat plate with a circular hole is subjected to tensile force, then its theoretical stress concentration factor is?
13. The stress represented by sin (t) + 2 belongs to which category?
14. Is it logical to use fluid analogy to understand the phenomenon of stress concentration?
15. The stress represented by cos (t) belongs to which category?
16. Which of the following reduces the stress concentration?
17. If a flat plate with a circular hole is subjected to tensile force, then its theoretical stress concentration factor is?

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