Mechanics of Materials & Structures Online Test – Paper 3

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

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

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

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

5. *The compression test is commonly used for testing

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

7. *The critical bending moment caused in a fixed end beam loaded with a uniformly distributed load (W = wL) throughout is

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

9. *Toughness is

10. If the Poisson's ratio of a material is 0.25, the ratio of Modulus of Rigidity to the Young's Modulus is

11. In rectangular column having cross section b X h, the core is

12. Strain energy of a member may be defined as work done on it

13. The strain energy stored by a member when strained within the elastic limit is known as

14. The rate of change of shear force is called

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

16. A column that fails primarily due to buckling is known as

17. 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

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

19. *The unit failure stress is taken as :

20. *The ratio of the largest load in a test to the original cross-sectional area of the piece is called:

21. *Strut is a

22. What is tenacity?

23. *Centrifugal force is given by

24. Moment of inertia of a rectangular beam bxd is

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

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

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

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

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

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

31. Which one is correct if the deflection of a beam is y

32. Longitudinal cracks observed in timber beams are due to

33. 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

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

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

36. *The shear force and bending moment are related by

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

38. Along the neutral axis of a simply supported beam

39. The slenderness ratio of a vertical column of a square section of 2.5 cm sides and an effective length of 1.75 m is

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

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

42. Point of contraflexure is a point where bending moment

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

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

45. *Dead load of a member is the

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

47. Find the maximum SF induced in S.S beam if the beam is subjected to a point load of 4 KN at the center of the beam and the span of the beam is 4 m

48. The c.g. of a semi-circular arc is

49. Buckling load for a given column depends upon

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