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Mechanical Engineering Objective Questions { Strength of Materials }



29. The materials which exhibit the same elastic properties in all directions are called?
A.homogeneous
B.inelastic
C. isotropic
D.isentropic

30. 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

31. 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

32. 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

33. For which material the Poisson's ratio is more than unity
A.Steel
B.None of the above.
C.Aluminium
D.Cast iron

34. 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

35. 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

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