Mechanics of Materials & Structures Online Test – Paper 3

1. Find the elongation of a bar if c/s area of the bar is A, length 1, applied load p, modulus of elasticity of material is E

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

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

4. The maximum deflection in a cantilever beam carrying a uniformly distributed load (w) over spans is (Where L is span of beam, W is total load and EI is flexural rigidity)

5. *Stress may be defined as force

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

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

8. The diagram showing the variation of axial load along the span is called

9. The brittle materials have low toughness because they

10. *The ratio of the intensity of stress in a case of a suddenly loaded to that of gradually applied load is

11. *The velocity of a moving body is:

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

13. 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

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

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

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

17. Longitudinal cracks observed in timber beams are due to

18. The expression EI(d^4y/dx^4) at any section for a beam is equal to

19. The maximum number of transverse shear forces possible at one end of an element of a plane frame are

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

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

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

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

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

25. The equivalent length of column fixed at one end and free at the other end is

26. *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:

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

28. For keeping the stress wholly permissible, the load may be applied to a circular column anywhere within a concentric circle of diameter

29. The maximum deflection in a cantilever beam carrying a concentrated load 'w' at the free end is (Where L is span of bean, W is total load and EI is flexural rigidity)

30. *The product EI is called

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

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

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

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

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

36. In the case of a simply supported beam subjected to UDL, the maximum shear force occurs at a point

37. *The total time of collision and restitution of two bodies is called

38. The maximum bending moment caused by a moment M applied at a distance 'a' from one end on a simply supported beam is.... (where L=span, a>L/2)

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

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

41. *Thrust is induced in the case of

42. A brittle material has

43. *Which of the following gives Modulus of Elasticity

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

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

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

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

48. 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

49. If a cantilever beam carries a uniformly distributed load over its entire length, then the shape of the shear force diagram and bending moment diagram respectively are

50. Shear strain is defined as