Related Questions

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
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
Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.
A Solid
B Liquid
C Combination of solid & liquid
D Neither solid nor liquid
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
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
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)
If you are irritated and show rashness because of the inadequate behaviour of another teachers, what do you think about your own behaviour?
A It is justified because behaviours are echo lim
B Your behaviour is not good because elders have the right to behave you in this way
C Your behaviour is also a sign of maladjustment and so try to control yourself when you are maltreated
D All of these
Which of the following materials is most elastic?
A Rubber
B Plastic
C Brass
D Steel
The materials having same elastic properties in all directions are called
A Ideal materials
B Uniform materials
C Isotropic materials
D Piratical materials

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