Mechanics Of Materials & Structures Online Test

Created by

Vikash chaudhary

This is a FREE online test. Beware of scammers who ask for money to attend this test.

Get fresh, new questions in each attempt.

Total Questions: 50
Time Allotted: 50 minutes
Passing Score: 70%
Randomization: Yes
Certificate: Yes
Do not refresh the page!
👍 All the best!

1 / 50

1. A section of a beam is said to be in pure bending if it is subjected to

a) constant bending moment and constant shear force

b) constant bending moment and zero shear force

c) constant shear force and zero bending moment

d) none of the above

2 / 50

2. *A beam is said to be loaded in pure bending when

a) Bending moment is constant

b) Bending moment is zero

c) Bending moment is changing linearly

d) Bending moment and shear force are changing linearly

3 / 50

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

a) maximum BM

b) sudden change in the slope of BM

c) point of contraflexture

d) maximum deflection

4 / 50

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

a) load intensity at the section

b) shear force at the section

c) BM at the section

d) slope of the section

5 / 50

5. The point of contraflexure occurs in a beam

a) cantilevers only

b) simply supported only

c) overhanging only

d) all of the above

6 / 50

6. *BM in a cantilever beam having a span of 1.8m and a uniformly distributed load of 4kg/m

a) 4.48 kg-m

b) 5.48 kg-m

c) 6.48 kg-m

d) none of the above

7 / 50

7. A simply supported beam of length I carries a load varying uniformly from zero at the left end to the maximum at the right end. The maximum bending moment occurs at a distance of

a) 1/√3 from the left end

b) 1/3 from left end

c) 1/√3 from the right end

d) 1/3 from the right end

8 / 50

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

a) to deform it

b) to resist elongation

c) to resist shortening

d) all of the above

9 / 50

9. 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

a) PI/AE

b) AE/PI

c) PA/IE

d) PE/AI

10 / 50

10. *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

11 / 50

11. *Fatigue is the failure of a material under:

a) constant loads but occasionally well above static load

b) varying loads, well below ultimate static load

c) constant loads well below ultimate static load

d) varying loads well above ultimate static load

12 / 50

12. The brittle materials have low toughness because they

a) have large plastic deformation before failure

b) have small plastic deformation before failure

c) have no plastic deformation before failure

d) can absorb impact load also

13 / 50

13. *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

14 / 50

14. Point of contraflexure is a point where bending moment

a) minimum

b) maximum

c) zero

d) changes sign

15 / 50

15. Which of the following end conditions permits the displacement in any direction and also rotation

a) fixed end

b) hinge end

c) free end

d) roller end

16 / 50

16. The ratio of the effective length of a column and the minimum radius of gyration of its cross-sectional area is known as

a) buckling factor

b) slenderness ratio

c) crippling factor

d) none of the above

17 / 50

17. 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

18 / 50

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

a) Bernoulli's law

b) yield stress

c) Hooke's law

d) Poisson's law

19 / 50

19. 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

20 / 50

20. For a column of given material, the Rankine's constant depends on

a) length of the column.

b) diameter of column

c) moment of inertia of column

d) none of the above

21 / 50

21. *The unit failure stress is taken as :

a) rupture stress

b) ultimate stress

c) failure stress

d) fracture stress

22 / 50

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

a) WL^3 / 8EI

b) WL^3 / 48EI

c) 5WL^3 / 48EI

d) none of the above

23 / 50

23. If a material has identical properties in all directions, it is said to be

a) homogeneous

b) isotropic

c) elastic

d) orthotropic

24 / 50

24. *The velocity of a moving body is:

a) A vector quantity

b) A scalar quantity

c) A constant quantity

d) None of the above

25 / 50

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

a) <1

b) >1

c) 1

d) none of the above

26 / 50

26. *The variation of the bending moment in the segment of a beam where the load is uniformly distributed is

a) linear

b) parabolic

c) cubic

d) rectangular

27 / 50

27. "When a rectangular beam is loaded transversely the maximum compressive stress is developed on the :

a) top layer

b) bottom layer

c) neutral axis

d) every cross section

28 / 50

28. If all the dimensions of a bar are increased in the proportion n:1, the proportion with which the maximum stress produced in the prismatic bar by its own weight will increase in the ratio

a) 1:n

b) n:1

c) 1:1/n

d) 1/n:1

29 / 50

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

a) co-planer non-concurrent forces

b) non-coplanar concurrent forces

c) non-coplanar non-concurrent forces

d) none of the above

30 / 50

30. *A tie is a member which

a) is subjected axial compression only

b) is subjected axial tension only

c) is subjected moment tension only

d) is subjected two equal and opposite forces.

31 / 50

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

a) yielding

b) creeping

c) breaking

d) none of the above

32 / 50

32. Which of the following gives Poisson's ratio?

a) ratio of linear stress to linear strain

b) ratio of shear stress to shear strain

c) ratio of lateral strain to longitudinal strain

d) ratio of the normal stress

33 / 50

33. *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

34 / 50

34. *The centre of gravity of a triangle is at the point where three

a) medians of the triangle meet

b) perpendicular bisectors of the sides of the triangle meet

c) bisectors of the angle of the triangle meet

d) none of these

35 / 50

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

a) L

b) 0.5L

c) 2L

d) 4L

36 / 50

36. *As the elastic limit reaches, tensile strain

a) decreases more rapidly

b) increases more rapidly

c) decreases in proportion to the stress

d) increases in proportion to the stress

37 / 50

37. Which of the following gives Modulus of Rigidity

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

38 / 50

38. The maximum bending moment in a simply supported beam loaded with a UDL of w/m having span l is

a) wl^2/2

b) wl^2/4

c) wl^2/8

d) wl^2/16

39 / 50

39. *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

40 / 50

40. The shear center may be defined as

a) the point through which the resultant of the shear stress pass

b) the point about which the moment of shear flow is zero

c) the center of gravity of the section

d) none of the above

41 / 50

41. *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

42 / 50

42. The stress necessary to initiate yielding is considerably

a) more than necessary to continue it

b) less than necessary to continue it

c) more than necessary to stop it

d) less than necessary to stop it

43 / 50

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

a) bh^3/12

b) bh^3/18

c) bh^3/36

d) all of the above

44 / 50

44. The variation of the bending moment in the segment of a beam where no external load is present is

a) linear

b) parabolic

c) cubic

d) rectangular

45 / 50

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

a) E= 3K+N/9KN

b) E= 3KN/3K+N

c) E= 9KN/3K+N

d) E= K/N

46 / 50

46. 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

47 / 50

47. The difference between SF values at any two sections will be equal to

a) the area of bending moment between the two sections

b) the difference between the slopes of the curve of the loading diagram at two sections

c) the ordinate of shear force diagram at one section plus the slope of the loading diagram multiplied by the distance between two sections

d) the area of the loading diagram between those two sections

48 / 50

48. A beam simply supported at ends is subjected to load. The maximum bending moment is located where

a) shear force is zero

b) shear force is maximum

c) bending moment is zero

d) axial thrust is zero

49 / 50

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

a) plastic

b) elastic

c) rigid

d) none of the above.

50 / 50

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

a) cast iron

b) wrought iron

c) mild steel

d) bronze

Please provide accurate information so we can send your Achievement Certificate by mail.

NameEmailPhone Number

Your score is

Please provide your feedback.

Thank you for your valuable feedback.

Buy Mechanics of Materials & Structures MCQ PDF for Offline Study

Mechanics of Materials & Structures Online Test – Paper 3

Please provide accurate information so we can send your Achievement Certificate by mail.

Related MCQs