Strength:
When external forces are applied on a metal, breaking (brittle metal) or yielding (ductile metal) may occur. Strength is the property of a metal by which it resists external force without breaking or yielding.
Stiffness:
When an external force is applied on a metal, it develops an internal resistance. The internal resistance developed per unit area is called stress. Stiffness is the ability of a metal to resist deformation under stress.
Toughness:
When a huge external force is applied on a metal, the metal will experience fracture. Toughness is the ability of a metal to resist fracture.
Brittleness
Brittleness is a property of material which breaks with little or no deformation.
7) which of the following property is desirable in parts subjected to shock and impact loads?
Answer is:
Toughness
Explanation:
Related Engineering Materials MCQ with Answers
Answer is:
Resilience
Explanation:
The strain energy stored in a body due to external loading within the elastic limit is known as resilience.
The property of a material essential for spring material is Resilience.
1. The maximum strain energy which can be stored in a body upto the elastic limit is called proof resilience.
2. The proof resilience per unit volume of a material is known as modulus of resilience.
Answer is:
decreases
Explanation:
Toughness: When a huge external force is applied on a metal, the metal will experience fracture. Toughness is the ability of a metal to resist fracture.
The toughness of material decreases when it is heated.
Answer is:
Mild steel
Explanation:
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.
Mild Steel has maximum ductility.
Answer is:
Brittleness
Explanation:
Brittleness
Brittleness is a property of material which breaks with little or no deformation.
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.
