Mechanics of Materials & Structures Online Test – Paper 3

1. *Fatigue is the failure of a material under:

2. *The simple bending equation is

3. The number of reaction components at a hinged end of a general loading is

4. *The centre of gravity of a triangle is at the point where three

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

6. *In a simply supported beam subjected to a point load at the center, the maximum bending moment occurs at

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

8. The ratio of elongations of a conical bar due to its own weight and that of a prismatic bar of the same length is

9. Find the maximum BM induced in a simply supported beam if the beam is subjected to a point load of 4 KN at the center of the beam and the span of the beam is 4 m

10. Maximum bending moment occurs at the center if the simply supported beam is subjected to

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

12. *The S.I. unit of the modulus of elasticity is

13. The maximum shear stress will always occur at

14. A viscoelastic material

15. *Maximum deflection of a simply supported beam subjected to concentrated load (w) at the mid-point is

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

17. The diagram showing the variation of axial load along the span is called

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

19. *The maximum BM produced in a simply supported beam having a span of 4 m and subjected to a UDL of 10 kN/m

20. The rate of change of shear force is called

21. If α is the coefficient of linear expansion, T is the rise in temperature, then thermal stress is given by

22. *As per the elastic theory of design, the factor of safety is the ratio of

23. A column that fails primarily due to buckling is known as

24. In a beam, the neutral plane

25. If the Poisson's ratio of a material is 0.25, the ratio of Modulus of Rigidity to the Young's Modulus is

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

27. *As the elastic limit reaches, tensile strain

28. The property of material by which it can be drawn, due to tension, to a smaller section, is called

29. *A beam is said to be of uniform strength if

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

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

32. A shear force diagram of a simply supported beam shows constant shear force throughout the span. It is subjected to

33. *Compression members always tend to buckle in the direction of the

34. The variation of the bending moment in the segment of a beam where no external load is present is

35. A perfectly elastic body is

36. In a continuous beam, the point where bending moment changes sign is called

37. *The variation of the bending moment in the segment of a beam where the load is uniformly distributed is

38. The slope of the curve of S.F. diagram at any section will be equal to

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

40. *The ratio of the largest load in a test to the original cross-sectional area of the piece is called:

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

42. Strain energy of a member may be defined as work done on it

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

44. *Toughness is

45. *Moment of inertia of an object having rectangular section of 'b' as width and 'd' as depth is given by:

46. Moment of inertia of a rectangular beam bxd is

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

48. The relation between deflection (y) and bending moment (M) is

49. Centrifugal force acts at a curve

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