Strength Of Materials Questions For Competitive Exams

Strength of Materials Strength of Materials Questions For Competitive Exams

U.P.S.C., S.S.C., I.A.S., B.Sc. Engineering, Diploma as well as diverse interviews

1. The unit of measurement of stress inwards S.I. units is: N/mm square, KN/mm square, N/meter square
2. Whenever some external organization of forces acts on a body, it undergoes some deformation. As the trunk undergoes some deformation, it sets upward some resistance to the deformation. This resistance per unit of measurement expanse to deformation is called: Stress
3. The unit of measurement of strain is: No unit
4. The deformation per unit of measurement length is called: Strain
5. When a trunk is subjected to ii equal as well as reverse pushes, equally a effect of which the trunk tends to  reduce its length, the stress as well as strain induced is: compressive
6. Strain is equal to Change inwards Length / Actual Length
7. When a trunk is subjected to ii equal as well as reverse forces, acting tangentially across the resisting section, equally a effect of which the trunk tends to shear off across the section, the stress as well as strain induced is: Shear Stress, Shear Strain
8. When a trunk is subjected to ii equal as well as reverse pulls, equally a effect of which the trunk tends to extend inwards length, the stress as well as strain induced is: Tensile Stress, Tensile Strain
9. Hooks constabulary holds expert upward to Elastic Limit
10. Proportional Limit, Elastic Limit, Yielding as well as thereafter Failure
11. The ratio of linear stress to linear strain: Modulus of Elasticity
12. The ratio of shear stress to shear strain: Modulus of Rigidity
13. The unit of measurement of modulus of elasticity is same equally those of Pressure, Stress, Modulus of Rigidity
14. Whenever a textile is loaded inside elastic limit, stress is: directly proportional to strain
15. When a alter inwards length takes place, the strain is known equally Linear Strain
16. The modulus of elasticity for Mild Steel is roughly equal to 210 KN/mm square
17. The alter inwards length due to a tensile or compressive forcefulness acting on a trunk is given past times PL/AE, where, P is Tensile or compressive forcefulness acting on the body, L is master copy length of the body, A is Cross-Sectional Area of the body,E is Young's modulus of the textile of the body
18. The unit of measurement of Young's Modulus is same equally that of Stress
19. Young's Modulus may live defined equally the ratio of Linear Stress to Linear Strain
20. Modulus of Rigidity may live defined equally the ratio of: Shear Stress to Shear Strain
21. Two bars of dissimilar materials as well as same size are subjected to same tensile force. If the bars receive got unit of measurement elongation inwards the ratio of 2:5, thus the ratio of modulus of elasticity of the ii materials volition be: 5:2
22. The deformation of a bar nether its ain weight is: half the deformation if the same trunk is subjected to direct charge equal to the weight of the body.
23. When a bar of length 50 as well as diameter d is rigidly fixed at the upper halt as well as hanging freely, thus the full elongation produced inwards the bar due to its ain weight is: w*l foursquare / 2E where W is weight per unit of measurement book of the bar
24. The length of a conical bar is l, the diameter of the base of operations is d as well as weight per unit of measurement book is w. It is fixed at its upper halt as well as hanging freely. The elongation of the bar nether the activeness of its ain weight volition be: w*l square/ 6E
25. The elongation of a conical bar nether its ain weight is: one-third that of the prismatic bar of the same length.
26. Strain rosettes are used to: Measure linear strain
27. The extension of a round out bar tapering uniformly from diameter d1 at ane halt to the diameter d2 at the other end, as well as subjected to an axial force of P is given by: 4*P*l / pie*E* d1*d2 
28. The extension of a round out bar tapering uniformly from diameter d1 at ane halt to the diameter d2 at the other end, as well as subjected to an axial force of P is: equal to the extension of a round out bar of diameter 'root nether d1*d2' subjected to the same charge P.
29. A bar of length L metres extend past times 50 mm nether a tensile forcefulness of P, the strain produced inwards the bar is: 0.001l / L
30. The ultimate tensile stress of Mild Steel is:  More than the ultimate compressive stress
31. The shear modulus of close materials amongst abide by to the modulus of elasticity: is less than half
32. The maximum stress produced inwards a bar of tapering department is at: Smaller End
33. A bolt is made a operate past times through a metro as well as both of them are tightly fitted amongst the aid of washers as well as nuts. If the nut is tightened, then: bolt is nether tension as well as metro is nether compression
34. A rod is enclosed centrally inwards a metro as well as the assembly is tightened past times stiff washers. If the assembly is subjected to a compressive load, then: both rod as well as metro are nether compression
35. A steel bar of v mm is heated from 15-degree celsius to 40-degree Celsius as well as it is costless to expand. The bar volition induce: No Stress
36. When a bar is subjected to a alter of temperature as well as its deformation is prevented, the stress induces inwards the bar is: Thermal Stress

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