Resilience:
Resilience is the ability of a metal to absorb energy and resist soft and impact load.
Creep:
When a metal is subjected to a constant load (below its yield point), at high temperature, for a prolonged period of time, it undergoes a permanent deformation. This tendency of the metal is called creep.
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 ability of a material to resist fracture due to high impact loads, is called toughness.
14) The ability of a material to absorb energy in the plastic range is called
Answer is:
resilience
Explanation:
Related Engineering Materials MCQ with Answers
Answer is:
can be rolled or hammered into thin sheets
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.
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.
Answer is:
deformation under stress
Explanation:
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.
Answer is:
all of these
Explanation:
Iron ore is, usually, found in the form of
1. As oxides (Haematite, Magnetite, Limonite)
2. As Carbonates ( Siderite)
3. As sulphides (Pyrite)
Answer is:
hematite
Explanation:
The iron ore mostly used for the production of pig iron is hematite.
The principal iron ores are hematite (Fe2O3) .
Hematite is an iron oxide mineral.
Hematite contains iron about 70%