Mechanics of Materials & Structures Online Test – Paper 3

1. The number of points of contraflexture in a simply supported beam carrying udl is

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

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

4. *Dead load of a member is the

5. The diagram showing the variation of BM along the span of the beam is called

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

7. 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

8. The bending moment in a cable carrying a system of loads will be

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

10. The number of reaction components at a hinge on rollers support is

11. *The forces which meet at one point, but their lines of action do not lie in a plane, are called:

12. *Stress may be defined as force

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

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

15. The actual breaking stress of a ductile material from a tension test will be

16. Find the maximum SF induced in a cantilever beam subjected to a point load of 10 KN and a length of the beam is 10 m. The load is located at a distance of 3 m from the free end

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

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

19. *The tension in a cable supporting a lift

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

21. The beam strongest in flexure will have the maximum

22. Shear strain is defined as

23. 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

24. A perfectly elastic body is

25. In a beam, the neutral plane

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

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

28. The difference between SF values at any two sections will be equal to

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

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

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

32. Which of the following materials will have the highest Young's Modulus?

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

34. *A diagram that shows the variation of axial force

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

36. 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

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

38. Rate of change of bending moment is equal to

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

40. *The compression test is commonly used for testing

41. Point of contraflexure is a point where bending moment

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

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

44. The effective length of a column if both ends are hinged

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

46. An isotropic material has

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

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

49. *BM in a cantilever beam having a span of 1.8m and a uniformly distributed load of 4kg/m

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