KPCL JE Mechanical Question Paper - 2018 with Answer Key

56) Connecting rod is usually made of

Answer is:

Medium carbon steel

Explanation:

Connecting rod is, usually, made from Medium carbon steel

57) The property of a material by virtue of which a body returns to its original, shape after removal of the load is called

Answer is:

Elasticity

Explanation:

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.