Mechanics of Materials & Structures Online Test – Paper 3

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

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

3. 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

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

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

6. *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:

7. An orthotropic material has

8. The bending moment diagram for a cantilever beam subjected to a moment at the end of the beam would be

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

10. A long vertical member subjected to an axial compressive load is called

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

12. *The slope of an elastic curve at the point of contraflexture

13. The maximum shear stress will always occur at

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

15. 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

16. The moment of inertia of a rectangular (Bx D) section about its base is

17. The difference between BM values at any two sections will be equal to

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

19. *Bending moment diagram of a simply supported beam having a uniformly distributed load is

20. *The unit failure stress is taken as :

21. *The law which states that within elastic limits strain produced is proportional to stress producing it is known as:

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

23. A viscoelastic material

24. Point of contraflexure is a point where bending moment

25. The rate of change of shear force is called

26. *Maximum deflection of a simply supported beam subjected to concentrated load (w) at the mid-point is

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

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

29. The crippling load for a column with both ends hinged is

30. *Young's modulus is the ratio of

31. Find the maximum BM 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:-

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

33. *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:

34. The variation of the bending moment in the portion of the beam carrying a linearly varying load is

35. *Short column taking maximum load having equal section

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

37. *The compression test is commonly used for testing

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

39. *The velocity of a moving body is:

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

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

42. Moment of inertia of a rectangular beam bxd is

43. The brittle materials have low toughness because they

44. *Centrifugal force is given by

45. *A truss is completely analyzed, when

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

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

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

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

50. *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