Related Questions

Ability of a material to absorb energy in deformation in the plastic range is characterised as its
A Ductility
B Toughness
C Creep
D Resilience
The ability of a material to absorb energy in the plastic range is called
A Resilience
B Creep
C Fatigue strength
D Toughness
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
Amount of energy that a material can absorb before its fracture is a measure of its
A Toughness
B Resilience
C Malleability
D Ductility
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
When a metal is heated in a flame, the electrons absorb energy and jump to higher energy state. On coming back to the lower energy siate, they emit light, which we can observe in
A Raman spectra
B Absorption spectra
C Emission spectra
D Fluorescence
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 ability of a material to offer resistance to scratching or indentation is a measure of its
A Brittleness
B Toughness
C Hardness
D Resilience
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
If a solid is compressed adiabatically in its elastic range, its __________ remains constat
A Internal energy
B Enthalpy
C Entropy
D Temperature

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