Design Against Fluctuating Load Practice Set

May 19, 2021

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1. The reliability factor for using 50% reliability in design is

2. A stress that varies in sinusoidal manner with respect to time from a minimum value to maximum value and which has some mean as well as amplitude value is called

3. 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

4. Stress concentration occurs at the contact between

5. Stress concentration occurs due to

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

7. Fatigue failure results due to fluctuating stresses when the stress magnitude is

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

9. The relationship between endurance limit of component subjected to fluctuating torsional shear stresses (Sse) to endurance limit in revered bending (Se) is

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

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


 

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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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