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What is the primary unit of measure for electric resistance?
The primary unit of measure for electric resistance is the ohm .
What is the process of heat treatment?
Heat treatment is a process used to alter the physical and sometimes chemical pro...
What is the primary unit of measure for electric resistance?
The primary unit of measure for electric resistance is the ohm ✔✔.
What is the process of heat treatment?
Heat treatment is a process used to alter the physical and sometimes chemical properties of a material,
often to improve its hardness or strength ✔✔.
What is a crystal lattice?
A crystal lattice is a three-dimensional arrangement of atoms or molecules in a crystalline material ✔✔.
What does the term “ductility” refer to?
Ductility refers to the ability of a material to deform under tensile stress, often characterized by its
ability to be stretched into a wire ✔✔.
What is the main purpose of alloying metals?
The main purpose of alloying metals is to improve their mechanical properties and resistance to
corrosion ✔✔.
What is the difference between ferrous and non-ferrous metals?
Ferrous metals contain iron, while non-ferrous metals do not ✔✔.
What is the primary characteristic of ceramics?
The primary characteristic of ceramics is their hardness and resistance to heat and chemical corrosion
✔✔.
What does "hardness" measure in materials?
Hardness measures a material's resistance to deformation or scratching ✔✔.
, What is the significance of the grain structure in metals?
The grain structure in metals affects their strength, ductility, and overall performance ✔✔.
What are the typical applications of polymers?
Polymers are commonly used in packaging, textiles, and insulation due to their versatility and
lightweight properties ✔✔.
What is a thermoplastic?
A thermoplastic is a type of polymer that becomes pliable when heated and solidifies upon cooling ✔✔.
What role do additives play in plastics?
Additives are used in plastics to enhance properties like flexibility, color, and durability ✔✔.
What is the main advantage of using composite materials?
The main advantage of composite materials is their high strength-to-weight ratio, making them ideal for
aerospace and automotive applications ✔✔.
What is meant by the term “fatigue” in materials science?
Fatigue refers to the weakening of a material caused by repeatedly applied loads, which can lead to
failure over time ✔✔.
What is the principle behind the Rockwell hardness test?
The Rockwell hardness test measures the depth of penetration of an indenter under a large load
compared to the penetration made by a preload ✔✔.
What does the term “thermal conductivity” refer to?
Thermal conductivity refers to a material's ability to conduct heat ✔✔.
What is the importance of corrosion resistance in materials?
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