SIMPLE STRESSES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

  SIMPLE STRESSES MULTIPLE

CHOICE QUESTIONS

(MCQ) WITH ANSWERS 

MCQ on simple stresses is very

helpful. It helps in understanding

fully about strength of materials.

Stress is internal resistance against

external loading. It has a limited

value for a material. Limited value

is different for different materials.

Fig. Simple tensile & compressive stresses 

1. Magnitude of the simple stress is

• 1. Variable

  2. Constant

  3. Variable & constant

  4. None

ANS: (b)

2. Simple stress is due to

1. Axial load

2. Tangential load

3. Axial or tangential load

4. None

ANS: (c )

3. Simple stress is

1. Tensile & compressive

2. Compressive and shear

3. Tensile, compressive & shear

4. None

ANS: (c )

4. Simple tensile or compressive stress causes

1. Deformation

2. Distortion

3. Deformation & distortion

4. None

ANS: (a)

5. Simple shear stress causes

1. Deformation

2. Distortion

3. Deformation & distortion

4. None

ANS: (b)

6. Simple stress is found in

1. Fan rod

2. Beam

3. Long column

4. None

ANS: (a)

7. Simple stresses are found in

1. Riveted & welded joints

2. Welded and bolted joints

3. Riveted, welded & bolted joints

4. None

ANS: (c )

8. Simple stress is proportional to simple strain up to

1. Yield point

2. Elastic limit

3. Yield & elastic limit

4. None

ANS: (b)

9. Symbol for simple stress is

1. σ

2. τ

3. σ & τ

4. None

ANS: (c )

10. Units of simple stress are

1. N

2. kN

3. MN

4. None

ANS: (d)

11. Simple stress is found from

1. Force/area

2. Bending moment/moment of inertia

3. Torque/Polar moment of inertia

4. None

ANS: (a)

12. Unit of simple stress is

1. N/mm²

2. MN/m²

3. N/mm² & MN/m²

4. None

ANS: (c )

13. Simple stress is directly proportion to the elastic limit is valid for

1. Brittle materials

2. Ductile materials

3. Brittle & ductile materials

4. None

ANS: (b)

14. A simple stress is

1. Visible to the naked eye

2. Non-visible to the naked eye

3. Visible & non-visible

4. None
   ANS: (b)

15. A simple stress is

1. Parallel to the load

2. Opposite to the load

3. Parallel & opposite to the load

4. None

ANS: (b)

16. A simple stress is due to

1. Thermal load

2. Eccentric load

3. Thermal & eccentric loads

4. None

ANS: (a)

17. A simple stress is

1. Frictional resistance

2. Internal resistance

3. External resistance

4. None

ANS: (b)

18. Is internal resistance?

1. Constant

2. Variable

3. Constant & variable

4. None

ANS: (b)

19. A shear load causes

1. Deformation

2. Distortion

3. Deformation & distortion

4. None

ANS: (b)

20. In a simple tensile stress, load is normal and

1. Coming out the area

2. Going into the area

3. Can’t say

4. None

ANS: (a)

21. Engineering stress is

1. Force/original area

2. Force/ Actual area

3. Force/Final area

4. None

ANS: (a)

22. Real stress is

1. Force/ original area

2. Force/ actual area

3. Force/(original + actual) / area

4. None

ANS: (b)

23. A simple stress is

1. Microscopic

2. Macroscopic

3. Microscopic & macroscopic

4. None

ANS: (b)

24. A simple tensile stress is a

1. Parallel stress

2. Tangential stress

3. Normal stress

4. None

(ANS: ( c )

25. A simple shear stress is a

1. Parallel stress

2. Normal stress

3. Parallel & normal stress

4. None

ANS: (a)

26. Shear stress is found in

1. Solids

2. Fluids

3. Solids & fluids

4. None

ANS: ( c )

27. Which Newton’s law is applicable to the simple stress and load?

1. First law

2. Second law

3. Third law

4. None

ANS: ©

28. Variation of simple stress & simple strain within elastic limit is

1. Linear

2. Parabolic

3. Linear & parabolic

4. None

ANS: (a)

29. Variation of real stress and real strain within elastic limit is

1. Linear

2. Parabolic

3. Linear and parabolic

4. None

ANS: (a)

30. Which is the case of simple stress?

1. Long column

2. Beam

3. Shaft

4. None

ANS: (d)

31. When tensile load is applied, its area of cross section

1. Increases

2. Decreases

3. No change

4. None

ANS: (b)

32. When a compressive load is applied to a body, its area of cross section

1. Increases

2. Decreases

3. Constant

4. None

ANS: (a)

33. When a shear force is increased on a body, its area of cross section

1. Increases

2. Decreases

3. Constant

4. None

ANS: (c )

34. A simple stress due to its own weight is

1. W/A

2. 2W/A

3. W/2A

4. None

ANS: (d)

35. A simple stress due to its own weight is

1. Variable

2. Constant

3. Variable & constant

4. None

ANS: (a)

    36. Stress is which type of resistance of a material

(a) External

(b) Internal

(c) Internal & external

(d) None

ANS: (b)

    37. Stress which causes elongation is

(a) Shear stress

(b) Compressive stress

(c) Shear & compressive

(d) None

ANS: (d)

    38. Stress causing elongation is

(a) Compressive stress

(b) Tensile stress

(c) Compressive & tensile stress

(d) None

ANS: (b)

    39. Stress strain diagram is drawn with

1. (a) Unit stress and unit strain

2. (b) Actual stress and actual strain

3. (c) Unit as well as actual stress and strain

4. (d) None

5. ANS:(a)

6. 40. Nominal stress is

(a) Load divided by actual area

(b) Load divided by original area

(c) Mean area

(d) None

(ANS: (b)

    41. With decrease of carbon in steel, ductility

(a) Increases

(b) Decreases

(c) Neither increases nor decreases

(d) None

ANS:(a)

    42. Highest stress will be present when a certain load is applied

(a) Gradually

(b) Suddenly

(c) With an impact

(d)None

ANS:(c)

    43. Extension of a tapered rod is given by

(a) δl =4 PL/πd₁d₂

(b) δl = P/4πd₁d₂

(c) δl =P/πd₁d₂L

(d) None

ANS: (d)

    44. Can there be thermal stress but no thermal strain?

(a) Yes

(b) No

(c) Yes as well as no

(d) None

ANS:(a)

    45. Yield stress is

(a)Greater than the elastic limit stress

(b) Less than the elastic limit stress

(c) Equal to the elastic limit stress

(d) None

ANS: (a)

    46. Thermal stress will be compressive if

(a) Contraction is prevented

(b) Expansion is prevented

(c) Contraction or expansion is prevented

(d) None

ANS:(b)

    47. Factor of safety for the brittle material is

(a) Yield stress/allowable stress

(b) Yield strain/allowable strain

(c) Ultimate stress/ allowable stress

(d) None

ANS:(c)

    48. Stress under an impact load will be

(a) Two times

(b) Four times

(c) Eight times

(d) None

ANS: (d)

    49. Stress under suddenly applied load will be

(a) Two times

(b) Four times

(c)Eight times

(d) None

ANS:(a)

    50. Bulk modulus is the ratio of

(a) Tensile stress/tensile strain

(b) Compressive stress/compressive strain

(c) Shear stress/shear strain

(d) None

ANS:(d)

    51. Relation between Young’s modulus and bulk modulus is

(a) E = 2k(1-μ)

(b) E = 3k(1-μ)

(c) E =3k(1-2μ)

(d) None

ANS: (c)

    52. Factor of safety for a ductile material is

(a) Elastic limit stress/Allowable stress

(b) Yield point stress/Allowable stress

(c) Ultimate stress/Allowable stress

(d) None

ANS: (b)

    53. Relation between Young’s and Bulk modulus is

1. Firstly         E =2K(1-µ)

2. Secondly    E =3K(1-µ)

3. Thirdly        E =3K (1- 2µ)

4. None

ANS: (c )

    54. Relation between Young’s, Bulk and Shear modulus is

1. Firstly       E =3K G/(3K+G)

2. Secondly   E=6KG/(3K+G)

3. Thirdly       E= 12KG/(3K+G)

4. None

ANS: (d)

    55. Relation between Young’s, Bulk and Shear modulus is

1. Firstly       E = 6K/(3K+9G)

2. Secondly  E =9 K/(3K+9G)

3. Thirdly      E =9KG/(3K+G)

4. None

ANS: (c )

    56. Thermal stress is

1. Firstly       σ_th=L α Δt

2. Secondly    σ_th=EαΔt

3. Thirdly        σ_th=αΔt

4. None

ANS: (b)

    57. Thermal tensile stress is there when

1. Contraction is prevented

2. Expansion is prevented

3. Contraction & expansion are prevented

4. None

ANS: (a)

    58. Thermal compressive stress is there when

1. Contraction is prevented

2. Expansion is prevented

3. Contraction & expansion are prevented

4. None

ANS: (b)

   

Fig. Simple stresses in a composite job

59. In a composite job, with rise of temperature, thermal stress is compressive in the material for which

1. α is smaller

2. α is larger

3. Both (a) & (b)

4. None

ANS: (b)

Q60. Stresses in a composite section of two materials will be

(a) Load in one material/area of that material
(b) Load in second material/area of first material
(c) Load in one material/area of second material
(d) None
(Ans: a)

Q61. Strains in a composite job of two materials will be

(a) Unequal
(b) Equal
(c) Twice of the each other
(d) None
(Ans: b)

Q62. A composite job consists of

(a) Only One material
(b) 1 ½ material
(c) Two or more materials
(d) None
(Ans: c)

Q63. A composite body of two materials under a common tensile load will have

(a) Same nature of stresses
(b) Different nature of stresses
(c) Same magnitude of stresses
(d) None
(Ans: a)

Q64. A composite body of two materials under a common tensile load will have

(a) Compressive and tensile stresses
(b) Tensile stresses
(c) Tensile and compressive stresses
(d) None
(Ans: b)

Q65. Thermal stresses in a composite section will be of

(a) Same nature
(b) Opposite nature
(c) Same nature + opposite nature
(d) None
(Ans: b)

Q66. Thermal stresses in a composite body will be

(a) Twice of each other
(b) Equal
(c) unequal
(d) None
(Ans: c)

Q67. Thermal strains in a composite body will be

(a) Twice of each other
(b) Equal
(c) unequal
(d) None
(Ans: c)

Q68. Thermal strains in a composite section will be of

(a) Same nature
(b) Opposite nature
(c) Same nature + opposite nature
(d) None
(Ans: b)

Q69. Areas of cross section of two materials in a composite beam are

(a) equal

(b) unequal

(c) Twice of one another

(d) None

(Ans: b)

Q70. Lengths of two materials in a composite job are always

(a) equal

(b) unequal

(c) Twice of one another

(d) None

(Ans: d)

Q71. Strains in the two materials are

(a) Same

(b) Different

(c) Two times in one material of the other

(d) None

ANS: (a)

 

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