Design Against Fluctuating Load Practice Set

May 19, 2021

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1. The approximate relationship between endurance limit of rotating beam specimen (S’e) and ultimate tensile strength (Sut), in case of steel component, is

2. The endurance limit of the component can be increased by

3. The criterion of failure for machine parts subjected to fluctuating stresses is

4. A stress that varies in sinusoidal manner with respect to time from tensile to compressive (or vice versa) and which zero mean is called

5. Stress concentration factor is defined as

6. The maximum stress concentration factor for a rectangular plate with a transverse hole loaded in tension or compression is

7. The approximate relationship between endurance limit of rotating beam specimen (S’e) and ultimate tensile strength (Sut) in case of cast iron and cast steel components, is

8. Stress concentration occurs due to

9. The notch sensitivity factor (q) is given by

    Where, Kt and Kf are theoretical and fatigue stress concentration factors

10. Stress concentration occurs at the contact between


 

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A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

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