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Question: 1 the ratio of the ultimate stress to the design...

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1. The ratio of the ultimate stress to the design stress is known as (a) elastic limit (c) factor of safety (b) strain (d) bulk modulus 2. An aluminum member is designed based on (a) yield stress (c) proof stress ()ltimate stress (b) elastic limit stress 3. A localized compressive stress at the area of contact between two members is known as (a) tensile stress (c) bearing stress (b) bending stress (d) shear stress as compared to 4. The stress in the bar when load is applied suddenly is the stress induced due to gradually applied load. (b) double (a) same (c) three times (d) four times 5. The energy stored in a body when strained within elastic limit is known as (a) resilience (c) strain energy (b) proof resilience (d) impact energy
6. The maximum energy that can be stored in a body due to external loading upto the elastic limit is called (a) resilience (c) strain energy (b) proof resilience (d) modulus of resilience 7. The strain energy stored in a body, when suddenly loaded, is the strain energy stored when same load is applied gradually (a) equal to (c) twice (b) one-half (d) four times 8. The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called (a) repeated stress (b) yield stress (c) fluctuating stress (d) alternating stress 9. The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand Without failure, for infinite number of cycles, when subjected to (b) dynamic load (a) static load (c) static as well as dynamic load (d) completely reversed load
10. Failure of a material is called fatigue when it fails (a) at the elastic limit (c) at the yield point (b) below the elastic limit (d) below the yield point 11. The resistance to fatigue of a material is measured by (a) elastic limit (c) ultimate tensile strength (d) endurance limit (b) Youngs modulus 12. When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is (a) 0.20 (c) 0.50 (b) 0.35 (d) 0.65 13. Stress concentration factor is defined as the ratio of (a) maximum stress to the endurance limit (b) nominal stress to the endurance limit (c) maximum stress to the nominal stress (d) nominal stress to the maximum stress
14. In static loading, stress concentration is more serious in (c) brittle as well as ductile materials (d) elastic materials 15. In cyclic loading, stress concentration is more serious in (a) brittle materials (b) ductile materials (a) brittle materials (c) brittle as well as ductile materials (b) ductile materials (d) elastic materials 16. The maximum shear stress theory is used for (a) brittle materials (b) ductile materials (c) plastic materials (d) non-ferrous materials 17. The maximum normal stress theory is used for (a) brittle materials (b) ductile materials (c) plastic materials (d) non-ferrous materials
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