Mechanics of Materials & Structures Online Test – Paper 3

1. The c.g. of a semi-circular arc is

2. The value of Poisson's ratio always remains

3. 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

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

5. The shear force on a beam is proportional to

6. *When the equal and opposite forces are applied to a body, tending to elongate it, then the stress produced is called

7. 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

8. *Stress in a beam due to simple bending is

9. The maximum bending moment in a simply supported beam loaded with a UDL of w/m having span l is

10. How does Young's Modulus vary with an increase in temperature?

11. The slope of the curve of B.M. diagram at any section will be equal to

12. A beam fixed at both ends with a central load W in the middle will have zero bending moment

13. If magnitude and direction of a load does not change with respect to time, this type of load is called

14. *Mathematically, strain may be defined as

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

16. The stress necessary to initiate yielding is considerably

17. The shear center may be defined as

18. *The simple bending equation is

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

20. *Hooke's law holds good up to:

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

22. *The ratio of the intensity of stress in a case of a suddenly loaded to that of gradually applied load is

23. At the point of application of concentrated load on a beam, there is

24. A member that is subjected to reversible tensile or compressible stress may fail at a stress lower than the ultimate stress of the material. The property of the metal is called

25. Bending moment diagram of simply supported beam with a point load at the centre of the span is

26. *If a cantilever beam of 8m long has a uniformly distributed load of 2KN/m throughout the length and a 10KN point load at the center of the beam, find the moment at the center:

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

28. *As the elastic limit reaches, tensile strain

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

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

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

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

33. For keeping the stress wholly permissible, the load may be applied to a circular column anywhere within a concentric circle of diameter

34. *Maximum bending moment occurs where

35. If the elasticity of the material is zero then the material is said to be

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

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

38. The brittle materials have low toughness because they

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

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

41. *Which of the following is dimensionless?

42. *The velocity of a moving body is:

43. *The slope of an elastic curve at the point of contraflexture

44. Point of contraflexure is a point where bending moment

45. In a fixed beam, the points of contraflexure,

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

47. A viscoelastic material

48. The maximum bending moment caused by a large number of equally spaced identical loads on a simply supported beam is (W = wL)

49. A body having similar properties throughout

50. Which of the following gives Poisson's ratio?