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Questions and Answers
What is hardness defined as?
What is hardness defined as?
- The strength of a material
- Resistance of a material to penetration, indentation, or scratches (correct)
- The brittleness of a material
- The ability of a material to withstand pressure
What is the typical range of diameter for the impression made on a test piece in Brinell hardness test?
What is the typical range of diameter for the impression made on a test piece in Brinell hardness test?
- 6 to 10 mm
- 2 to 6 mm (correct)
- 1 to 3 mm
- 10 to 15 mm
What is the principle of operation of the Brinell hardness test?
What is the principle of operation of the Brinell hardness test?
- Determining the brittleness of the material
- Obtaining Brinell Hardness Number (BHN) by the ratio of calculated load and spherical area of the indentation (correct)
- Measuring the depth of the indentation made on the specimen
- Calculating the resistance of the material to scratching
What load is used for impressing a standard hardened steel ball on a flat surface of a test specimen in Brinell hardness test for iron and steel?
What load is used for impressing a standard hardened steel ball on a flat surface of a test specimen in Brinell hardness test for iron and steel?
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Which materials are not suitable for hardness measurement using the Brinell hardness test?
Which materials are not suitable for hardness measurement using the Brinell hardness test?
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Which branch of metallurgy is mainly concerned with the reduction and oxidation of metals?
Which branch of metallurgy is mainly concerned with the reduction and oxidation of metals?
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What is the primary focus of physical metallurgy?
What is the primary focus of physical metallurgy?
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What is the role of a specialist practitioner in metallurgy known as?
What is the role of a specialist practitioner in metallurgy known as?
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What distinguishes metallurgy from metalworking?
What distinguishes metallurgy from metalworking?
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What are the subjects of study in chemical metallurgy?
What are the subjects of study in chemical metallurgy?
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