The materials which exhibit the same elastic properties in all directions are called______________?
(A) homogeneous
(B) inelastic
(C) isotropic
(D) isentropic
(D) visco-elastic.
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
(D) drawabihty
For which material the Poisson’s ratio is more than unity_________________?
(A) steel
(B) copper
(C) aluminium
(D) cast iron
(D) none of the above
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
(D) unpredictable
If a material expands freely due to heating it will develop ____________________?
(A) thermal stresses
(B) tensile stress
(C) bending
(D) compressive stress
(D) no stress
It equal and opposite forces applied to a body tend to elongate it, the stress so produced is called______________________?
(A) internal resistanpe
(B) tensile stress
(C) transverse stress
(D) compressive stress
(D) working stress
Modulus of rigidity is defined as the ratio of_________________?
(A) longitudinal stress and longitudinal strain
(B) volumetric stress and volumetric strain
(C) lateral stress and lateral strain
(D) shear stress and shear strain
(D) linear stress and lateral strain
The ultimate tensile stress of mild steel compared to ultimate compressive stress is__________________?
(A) same
(B) more
(C) less
(D) more or less depending on other factors
(D) unpredictable
A thin mild steel wire is loaded by adding loads in equal increments till it breaks. The extensions noted with increasing loads will behave as under_________________?
(A) uniform throughout
(B) increase uniformly
(C) first increase and then decrease
(D) increase uniformly first and then increase rapidly
(D) increase rapidly first and then uniformly