28) The total elongation produced in a bar of uniform section hanging vertically downwards due to its own weight is equal to that produced by a weight
half the weight of bar applied at lower end
Related Engineering Materials MCQ with Answers
elasticity
Elasticity:
Whenever an external force is applied on a metal, it deforms. Elasticity is the property by virtue of which a metal regains its original shape when the external force applied on it is removed.
es: forming, forging, hammering
Plasticity: Plasticity is the property by which a metal retains its deformation permanently, when the external force applied on it is removed.
Examples: forming, forging, hammering
Ductility: Ductility is the property by which a metal can be drawn into thin wires. It is determined by percentage elongation and percentage reduction in area of a metal.
Malleability: Malleability is the property by which a metal can be rolled into thin sheets. Highly malleable metals (like Mild Steel) are extensively used in making sheet metals.
isotropic
0.23 to 0.27
Poisson's ratio is defined as the ratio of Lateral strain and longitudinal strain.
ductility
Ductility is a property of a material enabling it to be drawn into wires.
Malleability is a property of a material enabling it to be drawn into thin sheets.
