Ppluplate answers and write in table below 6 12 13 14 15 16 17 18 19 20 10 l. Th

Question

Ppluplate answers and write in table below 6 12 13 14 15 16 17 18 19 20 10 l. Th (a) elasticity (b) endurance (e) strength (d) toughness (e) resilience e property of a material which enables it to resist fracture due to high impact loads is known as 2. Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to (a) dynamic loading (b) static loading (c) combined static and dynamic loading (d) completely reversed loading 3. Spring stiffness is (a) ratio of coil diameter to wire diameter (b) load required to produce unit deflection (c) its capability of storing energy (d) its ability to absorb shocks 4. Stress concentration in cyclic loading is more serious in (a) ductile materials (b) brittle materials (c) equally serious in both cases (d) depends on other factors 5. The designation M 33 x 2 of a bolt means (a) metric threads of 33 turns in 2 m (b) metric threads with cross-section of 33 mm and 2mm length (c) metric threads of 33 mm outside diameter and 2 mm pitch (d) bolt of 33 mm nominal diameter having 2 threads per mm 6. When a helical spring is in tension, its wire is subjected to (a) tension (b) shear (c) compression (d) all of the above t infinite fatigue life.

Explanation / Answer

1)- d- toughness..... toughness is the ability of a material to absorb energy and plastically deform without fracturing.

2)-d- compeletely reversed loading

3)-b- load required to produce unit deflection

4)-a-ductile material

5)-C- Metric threads of 33 mm outside diameter and 2 mm pitch

6)-c-compression

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