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Vikash chaudhary

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Total Questions: 50
Time Allotted: 50 minutes
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1 / 50

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

a) 1/6

b) 1/5

c) 1/4

d) 1/3

2 / 50

2. Load carrying capacity of fixed beam is

a) lesser than simply supported beam

b) lesser than the cantilever beam

c) greater than simply supported beam and cantilever beam

d) all of the above

3 / 50

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

a) the area of SF diagram between those two sections

b) the area of loading diagram between the two sections

c) the area of loading diagram

d) the area of bending moment between the two sections

4 / 50

4. *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:

a) 8 KN-m

b) 16 KN-m

c) 32 KN-m

d) 44 KN-m

5 / 50

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

a) zero

b) net shear force

c) the shear force in that direction

d) none of the above

6 / 50

6. *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

a) WL/2

b) WL/2

c) WL^2/12

d) WL/9

7 / 50

7. The crippling load for column of length 1, with one end fixed and the other end free is

a) P = π^2EI/4l^2

b) P= π^2EI/l^2

c) P= 4π^2EI/l^2

d) P= π^2EI/l

8 / 50

8. *The shear flow in a section can be defined as

a) total shear stress

b) flow direction of shear

c) total shear stress at a point

d) none of the above

9 / 50

9. *Toughness is

a) the ability to absorb energy during plastic deformation

b) higher ultimate strength

c) stress at field

d) strain energy at field

10 / 50

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

a) along the longitudinal axis

b) perpendicular to the longitudinal axis

c) on a plane normal to the longitudinal axis

d) vertically downward

11 / 50

11. Find the value of thrust, if the member (beam) is subjected to an inclined force having a magnitude of 5 kN and an inclination with the vertical of 30°

a) 2.5 kN

b) 5 kN

c) 2.5 √3 kN

d) 7.5 kN

12 / 50

12. For a column, with both ends fixed, the crippling load will be equal to

a) 2P

b) 4P

c) P/8

d) P/16

13 / 50

13. *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:

a) P

b) P/2

c) P/4

d) P/8

14 / 50

14. *A cable subjected to U.D.L. over its entire span assumes a shape of

a) semi-circle

b) an isosceles triangle

c) parabola

d) none of the above

15 / 50

15. A shear force diagram of a simply supported beam shows constant shear force throughout the span. It is subjected to

a) two concentrated loads spaced at points

b) a couple at mid span

c) a uniformly distributed load

d) none of the above

16 / 50

16. *In a simply supported beam subjected to a point load at the center, the maximum bending moment occurs at

a) left end

b) right end

c) center

d) none of the above

17 / 50

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

a) 1l

b) 1.5 l

c) 2 l

d) 3 l

18 / 50

18. *If a beam is loaded transversely, the maximum compressive stress develops on

a) top fiber

b) neutral axis

c) bottom fiber

d) every cross-section

19 / 50

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

a) cast iron

b) wrought iron

c) mild steel

d) bronze

20 / 50

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

a) thrust diagram

b) shear force diagram

c) bending moment diagram

d) none of the above

21 / 50

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

a) any general loading

b) loading with no component in the direction of the beam

c) loading with no component perpendicular to the direction of the beam

d) only when no load except self-weight acts.

22 / 50

22. *Strut is a

a) horizontal member

b) vertical member

c) inclined member

d) compression member

23 / 50

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

a) rectangle

b) triangle

c) parabola

d) cubic parabola

24 / 50

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

a) working stress to field stress

b) yield stress to working stress

c) ultimate stress to yield stress

d) ultimate load to load at yield

25 / 50

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

a) V = EI(d^2y/dx^2)

b) V = EI(d^3y/dx^2)

c) V = EI(d^3y/dx^3)

d) none of the above

26 / 50

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

a) the slope of loading at that section

b) the slope of shear force diagram at that section

c) the ordinate of shear force diagram at that section

d) the area of shear force diagram starting from any one end

27 / 50

27. Rate of change of bending moment is equal to

a) shear force

b) slope

c) deflection

d) none of the above

28 / 50

28. A column that fails primarily due to direct stress is called

a) long column

b) short column

c) weak column

d) none of the above

29 / 50

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

a) compressive stress

b) tensile stress

c) shear stress

d) longitudinal stress

30 / 50

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

a) for a UDL load are 2

b) for a concentrated load are 2

c) for a moment applied load are 2

d) all of the above

31 / 50

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

a) creep

b) fatigue

c) elasticity

d) plasticity

32 / 50

32. *Dead load of a member is the

a) one that remains constant

b) one that occurs due to the dead body

c) one that comes all of a sudden

d) one that comes due to the self-weight of the object

33 / 50

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

a) Yield point

b) Plastic limit

c) Elastic limit

d) Breaking point

34 / 50

34. *The maximum BM produced in a simply supported beam having a span of 4 m and subjected to a UDL of 10 kN/m

a) 10 kN-m

b) 20 kN-m

c) 30 kN-m

d) 40 kN-m

35 / 50

35. *Which of the following gives Bulk Modulus?

a) the ratio of linear stress to linear strain

b) the ratio of shear stress to shear strain

c) the ratio of lateral strain to longitudinal strain

d) the ratio of the normal stress of equal magnitude on all six faces of a solid cube to the volumetric strain

36 / 50

36. *The compression test is commonly used for testing

a) ductile materials

b) rubber

c) brittle materials

d) none of the above

37 / 50

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

a) 5t

b) 4.5 t

c) 4t

d) 3 t

38 / 50

38. *Normal strain is defined as

a) rate of change of length

b) strain that normally occurs

c) strain that is normal to shear strain

d) deformation normal to the force

39 / 50

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

a) y

b) dy/dx

c) d²y/dx²

d) d^3y/dx²

40 / 50

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

a) time of collision

b) period of collision

c) period of impact

d) all the above

41 / 50

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

a) plasticity

b) elasticity

c) ductility

d) malleability

42 / 50

42. The shear center in the case of a T-beam section is

a) at the C.G. of the section

b) at the neutral axis of the section

c) on the C.G. horizontal plane and away from C.G. within the leg projections

d) none of the above

43 / 50

43. A viscoelastic material

a) is an elastic material

b) has a small plastic zone

c) has a time-dependent stress-strain relation

d) has a viscous surface

44 / 50

44. *Young's modulus is the ratio of

a) Volumetric stress/volumetric strain

b) Lateral stress/lateral strain

c) Longitudinal stress/ longitudinal strain

d) Shear stress/ shear strain

45 / 50

45. Permanent set is

a) the force that acts permanently on the body

b) irrecoverable deformation in the body

c) the shape of the member just after the completion of construction

d) the ratio of Poisson's ratio to Young's modulus

46 / 50

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

a) rectangular section

b) circular section

c) I-section

d) T-section

47 / 50

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

a) 9 kN

b) 3 kN

c) 18 kN

d) zero

48 / 50

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

a) point load of center

b) uniformly distributed load throughout the span

c) triangular load with maximum intensity at the center

d) all of the above

49 / 50

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

a) 2l

b) 0.75l

c) 1l

d) 1.25l

50 / 50

50. *The unit failure stress is taken as :

a) rupture stress

b) ultimate stress

c) failure stress

d) fracture stress

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Mechanics of Materials & Structures Online Test – Paper 3

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