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Engineering Materials

Engineering Materials
Steel with __________ carbon is known as hypo-eutectoid steel.

0.008
Below 0.8%
Above 0.8%
None of these

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Engineering Materials
Delta-iron occurs between the temperature ranges of

600°C to 900°C
900°C to 1400°C
1400°C to 1530°C
400°C to 600°C

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Engineering Materials
Which of the following represents the allotropic forms of iron?

Body centered cubic iron and face centered cubic iron
Alpha iron, gamma from and delta iron
Alpha iron and beta iron
Alpha iron, beta iron and gamma iron

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Engineering Materials
Dye penetrant method is generally used to locate

Surface defects
Temporary defects
Superficial defects
Core defects

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Engineering Materials
Tungsten in high speed steel provides

Wear resistance
Toughness
Sharp cutting edge
Hot hardness

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Engineering Materials
Sulphur in steel

Lowers the toughness and transverse ductility
Decreases tensile strength and hardness
Acts as deoxidiser
Reduces the grain size

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