Related Questions

Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ?
A Tensile strength
B Elastic limit
C Proportional limit
D Yield strength
All materials obey Hooke's law within elastic limit. When elastic limit is reached, the tensile strain
A Increases very quickly
B Decreases very quickly
C Increases in proportion to stress
D Decreases in proportion to stress
A highly elastic material is deformed least on loading and retains its original form on removal of the load. Which of the following is the most elastic material?
A Steel
B Glass
C Rubber
D Brass
Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)?
A E = 2G (1 + v)
B E = G (1 + v)
C $${\text{E}} = \frac{{{\text{G}}\left( {1 + {\text{v}}} \right)}}{2}$$
D E = 2G (1 + 2v)
The materials which exhibit the same elastic properties in all directions are called
A Homogeneous
B Inelastic
C Isotropic
D Isentropic
Visco-elastic behaviour of materials which is time dependent is common in
A Plastics
B Crystalline solid
C Non-crystalline solids
D Non-crystalline organic polymer
The materials having same elastic properties in all directions are called
A Ideal materials
B Uniform materials
C Isotropic materials
D Piratical materials
The behaviour of visco-elastic material is time dependent. This behaviour is commo in __________ materials.
A Non-crystalline solid
B Crystalline
C Rubberry
D Non-crystalline organic polymeric
An elastic behaviour of materials is expressed in terms of
A Hysterisis loop area
B Stress-strain curve
C Relaxation time
D None of these
Which of the following is the most elastic material?
A Plastic
B Glass
C Steel
D Rubber

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