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Science Practice Set

6. Hydrostatic stress results in the following
(A).Linear strain
(B).Shear strain
(C).Both linear and shear strains
(D).None


7. High elastic modulus in materials arises from
(A).High strength of bonds
(B).Weak bonds
(C).combination of bonds
(D).None


8. Change in elastic modulus for ordinary materials between 0K and melting point is
(A).10-20% increase
(B).10-20% decrease
(C).80-90% decrease
(D).80-90% increase


9. Bauschinger effect
(A).Hysteresis loss during loading and unloading
(B).Anelastic deformation
(C).Dependence of yield stress on path and direction
(D).None


10. Shape of true stress-strain curve for a material depends on
(A).Strain
(B).Strain rate
(C).Temperature
(D).All