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Engineering Materials

Engineering Materials
Weld decay is the phenomenon found with

Mild steel
Cast iron
Nonferrous materials
Stainless steel

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Engineering Materials
Which of the following impurity in cast iron makes it hard and brittle?

Phosphorus
Silicon
Manganese
Sulphur

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Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

Heat resisting steel
High speed steel
Invar
Stainless steel

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Engineering Materials
Cemented carbide tools are not found to be suitable for cutting

Brass
Aluminium
Cast iron
Steel

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Engineering Materials
The hardness of steel primarily depends on

Shape of carbides and their distribution in iron
Percentage of alloying elements
Heat treatment employed
Percentage of carbon

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Engineering Materials
Which of the following property is desirable in parts subjected to shock and impact loads?

Brittleness
Toughness
Stiffness
Strength

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