Mechanics of Materials & Structures Online Test – Paper 3

1. The point of contraflexure occurs in a beam

2. A cantilever beam is one which is:

3. The phenomenon of slow growth of strain under steady tensile stress, i.e., increasing with time, is called

4. Point of contraflexure is a point where bending moment

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

6. *The phenomenon of decreased resistance of material due to the reversal of stress is called

7. *As the elastic limit reaches, tensile strain

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

9. Shape of the bending moment diagram for a simply supported beam having a point load at the center is

10. The shear center in the case of a T-beam section is

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

12. If a constant section is subjected to a uniform/ pure bending moment throughout, its length bends to

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

14. What is tenacity?

15. *Toughness is

16. Euler's formula for a column of length 1, with one end fixed and other hinged is

17. 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

18. An isotropic material has

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

20. Permanent set is

21. The maximum deflection in a cantilever beam carrying a concentrated load 'w' at the free end is (Where L is span of bean, W is total load and EI is flexural rigidity)

22. The value of buckling load is ... than the crushing load in the case of a long column

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

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

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

26. *The maximum deflection of a simply supported beam subjected to a concentrated load (W) at the midpoint is

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

28. If the length of a simply supported beam carrying a concentrated load at the center is doubled, the deflection at the center will become

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

30. A cantilever beam of span 4m and carrying a point load of 10 kN located at 3m from the fixed end. Find the BM at the fixed and free end

31. Rate of change of bending moment is equal to

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

33. *The simple bending equation is

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

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

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

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

38. The value of Poisson's ratio always remains

39. If y is the deflection of the beam, then shear force is

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

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

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

43. The stress due to temperature change in a member depends on

44. The difference in ordinate of the shear force between any two sections is equal to the area under

45. *Young's modulus is the ratio of

46. *A member which does not regain its original shape after the load producing deformation is removed, is said to be:

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

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

49. A brittle material has

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