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MCQ SIMPLE STRAINS
MCQ on simple strains helps
in understanding of strength of
a material. There are linear &
lateral strains are of use only
within elastic limit. The use of
materials is also limited within elastic limit.
-
Linear strain is due to
(a) Tensile stress
(b) Complex stress
(c) Tensile & complex stresses
(d) None
ANS: (a)
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 linear strain
(b) Smaller than the linear strain
(c) Equal to the linear strain
(d) None
ANS: ( a)
9. The strain is dealt with
(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/longitude strain
(b) Linear strain/ lateral strain
(c) Lateral strain/linear strain
(d) None
(Ans: c)
22. The strain due to two principal tensile stresses σ1 and σ2 in the direction of σ1 will be
(a) (1/E) (σ1 +µ σ2)
(b) (1/E) (-σ1 +µ σ2)
(c) (1/E) (σ1 –µ σ2)
(d) None
(Ans: c)
23.The strain due to two principal σ1 (tensile) and σ2 (Compressive) in the direction of σ1 will be
(a) (1/E) (σ1 +µ σ2)
(b) (1/E) (-σ1 +µ σ2)
(c) (1/E) (σ1 –µ σ2)
(d) None
(Ans: a)
24. The strain due to two principal compressive stresses σ1 and σ2 in the direction of σ1 will be
(a) (1/E) (σ1 +µ σ2)
(b) (1/E) (-σ1 +µ σ2)
(c) (1/E) (σ1 –µ σ2)
(d) None
(Ans: b)
25. The strain due to two principal compressive stresses σ1 and σ2 in the direction of σ2 will be
(a) (1/E) (σ2 +µ σ1)
(b) (1/E) (-σ1 +µ σ2)
(c) (1/E) (µσ1 — σ2)
(d) None
(Ans: c)
26. 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)
27. 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)
28. A single compressive stress (σ) is acting along the width, the strain in the lateral direction will be
(a) µσ/E
(b) –σ/E
(c) –µσ/E
(d) None
(Ans: a)
29. The value of Poisson’s ratio for any material is always
(a) < 1
(b) > 1
(c) = 1
(d) None
(Ans: a)
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