Mechanics of Materials & Structures Online Test – Paper 3

1. *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:

2. *The compression test is commonly used for testing

3. *A truss is completely analyzed, when

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

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

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

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

8. In the case of an H section, the maximum shear stress will occur at

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

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

11. The point of contraflexure occurs in a beam

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

13. An orthotropic material has

14. The slope of the curve of B.M. diagram at any section will be equal to

15. 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

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

17. *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:

18. The slenderness ratio of a vertical column of square cross-section of 10 cm side and 500 cm long is

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

20. *Determinate beam can be analyzed with the help of

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

22. *The velocity of a moving body is:

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

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

25. Euler's formula for a column of length 1, with one end fixed and other hinged is

26. *As per the elastic theory of design, the factor of safety is the ratio of

27. An isotropic material has

28. In a beam, the neutral plane

29. *The property of a material by which a body returns to its original shape after removal of the force is called

30. Centrifugal force acts at a curve

31. The effective length of a column effectively held in position and restrained in direction at one end will be

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

33. Which of the following gives Modulus of Rigidity

34. The brittle materials have low toughness because they

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

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

37. Along the neutral axis of a simply supported beam

38. Shear strain is defined as

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

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

41. Point of contraflexure is a point where bending moment

42. The beam strongest in flexure will have the maximum

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

44. A viscoelastic material

45. *A simply supported beam as shown in the fig. carries 10 t of load. What will be the reaction at point B ?

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

47. *Strut is a

48. The reaction at end A of the beam shown is

49. *Proof resilience is the greatest stored energy at

50. Normally, the numerical value of Poisson's is