Mechanics of Materials & Structures Online Test – Paper 3

1. Which of the following end conditions permits the displacement in any direction and also rotation

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

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

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

5. *The bending moment at a section tends to bend or deflect the beam and internal stresses resist its bending. The resistance offered by the internal stress to the bending, is called:

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

7. The region of c/s of a column in which compressive load may be applied without producing tensile load is known as

8. What is tenacity?

9. *A cable subjected to U.D.L. over its entire span assumes a shape of

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

11. *"A simply supported beam of span L carries a uniformly distributed load W. The maximum bending moment, M is:

12. Find the bending moment at the center and also find the maximum bending moment

13. *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:

14. The beam strongest in flexure will have the maximum

15. The point of contraflexure occurs in a beam

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

17. A column that fails primarily due to direct stress is called

18. For a column of given material, the Rankine's constant depends on

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

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

21. 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

22. *Stress may be defined as force

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

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

25. *The shear force in a concrete beam is assumed to act

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

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

28. 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

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

30. *The stress at which the extension of a material takes place more quickly as compared to the increase in load is called

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

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

33. Find the slenderness ratio of the column of M.I. = 10000cm4, Area =100cm^2 & effective length =3.0m

34. *Which of the following is dimensionless?

35. 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

36. The rate of change of shear force is called

37. The ratio of moment of inertia of a square section to that of a circular section for a given depth is given by

38. *A point where SF is zero, BM is

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

40. *The law "Stress is proportional to strain within certain limits" is formulated by

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

42. 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)

43. Identify the correct relationship that exists among the modulus of elasticity (E), modulus of rigidity (N), and bulk modulus (k) is

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

45. The ratio of the effective length of a column and the minimum radius of gyration of its cross-sectional area is known as

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

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

48. A cantilever beam is the one which is supported with

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

50. *The maximum bending moment in a simply supported beam UDL is applied