Mechanics of Materials & Structures Online Test – Paper 3

1. *A beam is said to be loaded in pure bending when

2. *The relation between the radius of curvature (R), bending moment (M), and flexural rigidity (EI) is given by

3. Permanent set is

4. The moment of inertia of a triangular section b x h about the base is

5. If all the dimensions of a bar are increased in the proportion n:1, the proportion with which the maximum stress produced in the prismatic bar by its own weight will increase in the ratio

6. *Which of the following gives Bulk Modulus?

7. Find the elongation of a bar if c/s area of the bar is A, length 1, applied load p, modulus of elasticity of material is E

8. *If the shear force along a section of a beam is zero, the bending moment at the section is:

9. The maximum bending moment caused by a moving load on a fixed-end beam occurs

10. If the stress produced by a prismatic bar is equal to the working stress, the area of the cross-section of the prismatic bar becomes

11. *Centre of gravity of a semi-circle is... above the base AB (Dia.)

12. *A tie is a member which

13. The difference between BM values at any two sections will be equal to

14. If the value of Young's Modulus of elasticity for a material is zero, it implies that the material is

15. The zone between the elastic limit and proportional limit on the elastic curve of an elastic material is known as

16. The property of material by which it can be beaten or rolled into plates is called

17. The expression EI(d^4y/dx^4) at any section for a beam is equal to

18. The crippling load for column of length 1, with one end fixed and the other end free is

19. The moment of inertia of a triangular section b x h about the c-g is

20. The section modulus of a circular section about an axis through its C.G. is

21. The beam strongest in flexure will have the maximum

22. Shear strain is defined as

23. According to Hook's law, which one is correct?

24. *Bending moment diagram of a simply supported beam having a uniformly distributed load is

25. *The velocity of a moving body is:

26. Which of the following is a relatively ductile material?

27. The reaction at end A of the beam shown is

28. Centrifugal force acts away from the center of the path while centripetal force

29. A Prismatic bar when subjected to pure bending assumes the shape of

30. Shear force diagram for a cantilever carrying a UDL over its whole length is

31. The moment of inertia of a square section is given by

32. The bending moment diagram for a cantilever beam subjected to a moment at the end of the beam would be

33. For a column, with both ends fixed, the crippling load will be equal to

34. The diagram showing the variation of BM along the span of the beam is called

35. The bending moment acting on the plane of an element will cause the following type of stress on the plane

36. The point of contraflexure occurs in a beam

37. The slenderness ratio of a vertical column of square cross-section of 10 cm side and 500 cm long is

38. In the case of a simply supported beam subjected to UDL, the maximum shear force occurs at a point

39. The safe value of stress below which the material will not fail when subjected to a reversal of stress is known as

40. *Which of the following gives Modulus of Elasticity

41. *The amount of shear force at the maximum bending moment

42. Load carrying capacity of fixed beam is

43. *Which of the following sections is the most efficient in carrying bending moments

44. *The shear flow in a section can be defined as

45. The moment of inertia of an area will be least with respect to

46. The effective length of a column if both ends are hinged

47. *Mathematically, strain may be defined as

48. In the case of an H section, the maximum shear stress will occur at

49. *The ratio of change in volume to the original volume is called:

50. For a beam of uniform strength if its depth is maintained constant then its width will vary in proportion to