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Multiple Choice Questions (MCQ) with answers on Simple Strains

https://mesubjects.net/wp-admin/post.php?post=4223&action=edit              MCQ PRINCIPAL STRESSES

https://mesubjects.net/wp-admin/post.php?post=4215&action=edit               MCQ FACTOR OF SAFETY

https://mesubjects.net/wp-admin/post.php?post=14567&action=edit                     MCQ PRINCIPALSTRAINS

https://www.mesubjects.net/wp-admin/post.php?post=7658&action=edit                MCQ Simple stresses

 

Multiple Choice Questions

(MCQ) with answers on Simple

Strains

MCQ on simple strains helps

in understanding of strength of

a material. There are linear &

lateral and angular strains. These are of use

only within elastic limit. The use of

materials is also limited within elastic limit.

  1. Linear strain is due to

(a) Tensile stress

(b) Complex stress

(c) Tensile & complex stresses

(d) None

ANS: (c)

2. Simple strain is positive due to

(a) compressive stress

(b) Shear stress

(c) Compressive & Shear stress

(d) None

ANS: (d)

3. The nature of strain is positive due to

(a) Shear stress

(b) Compressive stress

(c) Tensile stress

(d) None

ANS: (c)

4. The direction of linear strain is

(a) perpendicular to the direction of force

(b) parallel to the direction of force

(c) In the direction of the force

(d) None

ANS: (c )

5. Negative shear strain is due to

(a) Clockwise shear stress

(b) Anti-clockwise shear stress

(c) Clockwise & anti-clockwise shear stresses

(d) None

ANS: (a)

6. Lateral strain is in a direction

(a) Parallel to the force

(b) perpendicular direction of the force

(c) parallel & perpendicular directions

(d) None

ANS: (b)

7. The nature of lateral & linear strains is

(a) Same

(b) Opposite

(c) Same & opposite

(d) None

ANS: (b)

8. The magnitude of linear strain is

(a) Greater than the lateral strain

(b) Smaller than the lateral strain

(c) Equal to the lateral strain

(d) None

ANS: ( a)

9. The strain in consideration is

(a) More than the yield point

(b) More than the ultimate

(c) less than the elastic limit

(d) None

ANS: (c)

10. The magnitude of simple strain within elastic limit is

(a) > 30 % & < 50 %

(b) Greater than 70 %

(c) =100 %

(d) None

ANS: (d)

11. Alternately , same magnitude of compressive and tensile force is applied to the same specimen. The magnitude of tensile strain is

(a) > compressive strain

(b) = compressive strain

(c) < compressive strain

(d) None

ANS: (b)

12. Ratio of linear strain to lateral strain is

(a) >1

(b) < 1

(c) = 1

(d) None

ANS: (a)

13. The units of simple tensile strain is

(a) Quintal

(b) kg

(c) Ton

(d) none

ANS: (d)

14. Which one is more appropriate unit of tensile strain

(a) km

(b) m

(c) mm

(d)None

ANS: (c)

15. The unit of shear strain is

(a) mm

(b) degrees

(c) radians

(d) None

ANS: (c)

16. Shear strain is a

(a) Linear strain
(b) Parabolic strain
(c) Logarithmic strain
(d) None
(Ans: d)

17. Shear strain is a

(a) Linear strain
(b) Parabolic strain
(c) Angular strain
(d) None
(Ans: c)

18. Which material stress strain curve is more steep

(a)  Ductile material
(b)  Brittle material
(c)  Plastic
(d) None
(Ans: b)

19. The symbol for Poisson’ ratio is

(a) σ
(b) η
(c) µ
(d) None
(Ans: c)

20. Poisson’s Ratio is

(a) Positive
(b) Zero
(c) Negative
(d) None
(Ans: c)

21. Poisson’s ratio is

(a) Linear strain/longitudinal strain
(b) Linear strain/ lateral strain
(c) Lateral strain/linear strain
(d) None
(Ans: c)

22. Under pure tension (σ) of a rod, the lateral strain will be

(a) σ/E
(b) -µσ/E
(c) +µσ/E
(d) None
(Ans: b)

23. A single compressive stress (σ) , the strain in the lateral direction will be

(a) µσ/E
(b) –σ/E
(c) –µσ/E
(d) None
(Ans: a)

24. The value of Poisson’s ratio for any material  is always

(a) < 1

(b) > 1

(c) = 1

(d) None

(Ans: a) 

25. Thermal strain is

  1. Firstly      εth=L α Δt

  2. Secondly    εth=EαΔt

  3. Thirdly        εth=αΔt

  4. None

ANS: (a)

    26. Thermal tensile strain is there when

  1. Contraction is prevented

  2. Expansion is prevented

  3. Contraction & expansion are prevented

  4. None

ANS: (a)

    27. Thermal compressive stress is there when

  1. Contraction is prevented

  2. Expansion is prevented

  3. Contraction & expansion are prevented

  4. None

ANS: (b)

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

  1. α is smaller

  2. α is larger

  3. Both (a) & (b)

  4. None

ANS: (b)

29. Linear stress strain curve is for a
(a) Load ∞ displacement
(b) Load ∞ ( 1/displacement)
(c) Load = ( displacement)2
(d) None
(Ans: a)

30. Parabolic stress strain curve is for a
(a) Load ∞ displacement
(b) Load ∞ ( 1/displacement)
(c) Load = ( displacement)2
(d) None
(Ans: d)

31. The strain in the diagonal of a body under pure shear will be
(a) (σ/E) (1+µ)
(b) (σ/E) (-σ +µ σ)
(c) (1/E) (σ –µ σ)
(d) None
(Ans: a)