Mechanics of Materials & Structures Online Test – Paper 3

1. The moment of inertia of an area will be least with respect to

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

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

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

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

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

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

8. *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:

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

10. *In the case of a fixed beam loaded at a point at its center, the number of points at which BM is zero

11. *In a simply supported beam with span (L) having a triangular load with its intensity 0 at both ends and W at center. The maximum BM will be

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

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

14. *The rate of change of shear force is called

15. The section modulus of a circular section about an axis through its C.G. is

16. In a beam where shear force is maximum, the bending moment will be

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

18. What is strain energy?

19. A perfectly elastic body is

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

21. A body having similar properties throughout

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

23. A viscoelastic material

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

25. *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:

26. 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

27. The bending moment acting on the plane of an element will cause the following type of stress on the plane

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

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

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

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

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

33. The shear center may be defined as

34. In an I section, almost all the shear force is taken by

35. A cantilever beam is one which is:

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

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

38. A brittle material has

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

40. The moment of inertia of a triangular section b x h about the c-g is

41. 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

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

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

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

45. The maximum shear stress will always occur at

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

47. The property of material by which it can be drawn, due to tension, to a smaller section, is called

48. *As the elastic limit reaches, tensile strain

49. *The Young's Modulus of elasticity is defined as the ratio of stress & strain within the

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