Mechanics of Materials & Structures Online Test – Paper 3

1. *As the elastic limit reaches, tensile strain

2. A brittle material has

3. The brittle materials have low toughness because they

4. A beam simply supported at ends is subjected to load. The maximum bending moment is located where

5. *If a beam is loaded transversely, the maximum compressive stress develops on

6. *The compression test is commonly used for testing

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

8. The shear force on a beam and the displacement are related by

9. The maximum deflection of a simply supported beam subjected to a uniformly distributed load (w) over the span is

10. *Which of the following is dimensionless?

11. A cantilever beam is one which is:

12. The square root of the ratio of moment of inertia and cross-section area of the member is known as

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

14. A beam is supported over three rollers lying in the same plane. The beam is stable for

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

16. *Thrust is induced in the case of

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

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

19. *"If a rod is simultaneously pulled at both of its ends, it will be a case of:

20. *Stress may be defined as force

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

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

23. The maximum bending moment caused on a simply supported beam subjected to two equal concentrated loads (W/2) spaced at an equal distance (L/3) over the span is

24. Moment of inertia of a rectangular beam bxd is

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

26. *Strut is a

27. The maximum number of transverse shear forces possible at one end of an element of a plane frame are

28. A beam of uniform strength will have at every cross-section the same

29. A simply supported beam of length I carries a load varying uniformly from zero at the left end to the maximum at the right end. The maximum bending moment occurs at a distance of

30. A perfectly elastic body is

31. *Mathematically, strain may be defined as

32. *The maximum bending moment caused by a moving load on a simply supported beam is

33. The algebraic sum of the shear flow of a section in any direction must be equal to

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

35. *Toughness is

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

37. What is tenacity?

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

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

40. *Find the maximum bending moment in a simply supported beam loaded with a UDL of 2 t/m having a span of 4m

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

42. In simple bending theory, the assumption that a plane section before bending remains plane after bending implies that

43. A section of a beam is said to be in pure bending if it is subjected to

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

45. *A simply supported beam as shown in the fig. carries 10 t of load. What will be the reaction at point B ?

46. *The magnitude of a shear force at a distance of L/4 from either end of a simply supported beam with load P applied at midspan is equal to:

47. 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

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

49. The method of increasing fatigue resistance by overstressing the metal by successively increasing the loading is known as

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