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Machine Design 1: Introduction
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Machine Design 1: Introduction
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23 Questions

1. A beam subjected to bending moment undergoes which of the following stresses?
2. According to principal stress theory, which option represents the correct relation between yield strength in shear (YSS) and the yield strength in tension (YST)?
3. The region of safety in maximum shear stress theory contains which of the given shape
4. If there are residual stresses in the material, than lower factor of safety is used.
5. Buckling is elastic instability which leads to sudden large lateral deflection.
6. Type of load affects factor of safety.
7. If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 20N/mm²Find the maximum amount of shear stress to which the body is subjected.
8. The normal stress is perpendicular to the area under considerations, while the shear stress acts over the area.
9. Modulus of rigidity for carbon steels is greater than that of grey cast iron.
10. According to principal stress theory, which option represents the correct relation between yield strength in shear (YSS) and the yield strength in tension (YST)?
11. For cast iron components, which of the following strength are considered to be the failure criterion?
12. The critical buckling load depends upon which of the following parameters?
13. If there are residual stresses in the material, than lower factor of safety is used.
14. Buckling is elastic instability which leads to sudden large lateral deflection.
15. Pitting occurs on _____ of the component.
16. If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 10N/mm². Find the inclination of the plane in which shear stress is maximal.
17. If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 10N/mm². Find the inclination of the plane in which shear stress is maximal.
18. For components made of ductile materials like steel, subjected to static loading which of the following strength is used as a failure of criterion?
19. The total strain energy for a unit cube subjected to three principal stresses is given by?
20. If a body is subjected to stresses in xy plane with stresses of 60N/mm² and 80N/mm² acting along x and y axes respectively. Also the shear stress acting is 20N/mm². Find the maximum normal stress.
21. For cast iron components, which of the following strength are considered to be the failure criterion?
22. Which of the following relationship is true? (p=Poisson’s ratio)
23. Distortion energy theory is slightly liberal as compared to maximum shear stress theory.

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