31. The value of Poisson's ratio for cast iron is
(a) 0.1 to 0.2
(b) 0.23 to 0.27
(c) 0.25 to 0.33
(d) 0.4 to 0.6
(e) 3 to 4.
Ans: b
32. The property of a material which allows it to be drawn into a smaller section is called
(a) plasticity
(b) ductility
(c) elasticity
(d) malleability
(e) durability.
Ans: b
33. Poisson's ratio is defined as the ratio of
(a) longitudinal stress and longitudinal strain
(b) longitudinal stress and lateral stress
(c) lateral stress and longitudinal stress
(d) lateral stress and lateral strain
(e) none of the above.
Ans: c
34. For which material the Poisson's ratio is more than unity
(a) steel
(b) copper
(c) aluminum
(d) cast iron
(e) none of the above.
Ans: e
35. The property of a material by virtue of which it can be beaten or rolled into plates is called
(a) malleability
(b) ductility
(c) plasticity
(d) elasticity
(e) reliability.
Ans: a
36. The change in the unit volume of a material under tension with increase in its Poisson's ratio will ,
(a) increase
(b) decrease
(c) remain same
(d) increase initially and then decrease
(e) unpredictable.
Ans: b
37. The percentage reduction in area of a cast iron specimen during tensile test would be of the order of
(a) more than 50%
(b) 25—50%
(c) 10—25%
(d) 5—10%
(e) negligible.
Ans: e
38. If a material expands freely due to heating it will develop
(a) thermal stresses
(b) tensile stress
(c) bending
(d) compressive stress
(e) no stress.
Ans: e
39. In a tensile test, near the elastic limit zone, the
(a) tensile strain increases more quickly
(b) tensile strain decreases more quickly
(c) tensile strain increases in proportion to the stress
(d) tensile strain decreases in proportion to the stress
(e) tensile strain remains constant.
Ans: a
40. The stress necessary to initiate yielding is
(a) considerably greater than that necessary to continue it
(b) considerably lesser than that necessary to continue it
(c) greater than that necessary to stop it
(d) lesser than that necessary to stop it
(e) equal to that necessary to stop it.
Ans: a
Read More Questions:
Strength of Materials - Mechanical Engineering MCQs Part1
Strength of Materials - Mechanical Engineering MCQs Part2
(a) 0.1 to 0.2
(b) 0.23 to 0.27
(c) 0.25 to 0.33
(d) 0.4 to 0.6
(e) 3 to 4.
Ans: b
32. The property of a material which allows it to be drawn into a smaller section is called
(a) plasticity
(b) ductility
(c) elasticity
(d) malleability
(e) durability.
Ans: b
33. Poisson's ratio is defined as the ratio of
(a) longitudinal stress and longitudinal strain
(b) longitudinal stress and lateral stress
(c) lateral stress and longitudinal stress
(d) lateral stress and lateral strain
(e) none of the above.
Ans: c
34. For which material the Poisson's ratio is more than unity
(a) steel
(b) copper
(c) aluminum
(d) cast iron
(e) none of the above.
Ans: e
35. The property of a material by virtue of which it can be beaten or rolled into plates is called
(a) malleability
(b) ductility
(c) plasticity
(d) elasticity
(e) reliability.
Ans: a
36. The change in the unit volume of a material under tension with increase in its Poisson's ratio will ,
(a) increase
(b) decrease
(c) remain same
(d) increase initially and then decrease
(e) unpredictable.
Ans: b
37. The percentage reduction in area of a cast iron specimen during tensile test would be of the order of
(a) more than 50%
(b) 25—50%
(c) 10—25%
(d) 5—10%
(e) negligible.
Ans: e
38. If a material expands freely due to heating it will develop
(a) thermal stresses
(b) tensile stress
(c) bending
(d) compressive stress
(e) no stress.
Ans: e
39. In a tensile test, near the elastic limit zone, the
(a) tensile strain increases more quickly
(b) tensile strain decreases more quickly
(c) tensile strain increases in proportion to the stress
(d) tensile strain decreases in proportion to the stress
(e) tensile strain remains constant.
Ans: a
40. The stress necessary to initiate yielding is
(a) considerably greater than that necessary to continue it
(b) considerably lesser than that necessary to continue it
(c) greater than that necessary to stop it
(d) lesser than that necessary to stop it
(e) equal to that necessary to stop it.
Ans: a
Read More Questions:
Strength of Materials - Mechanical Engineering MCQs Part1
Strength of Materials - Mechanical Engineering MCQs Part2
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