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Engineering Materials

Engineering Materials
Which of the following property is desirable for materials used in tools and machines?

Ductility
Elasticity
Plasticity
Malleability

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Engineering Materials
The main alloying elements high speed steel in order of increasing proportion are

Tungsten, chromium, titanium
Tungsten, titanium, vanadium
Chromium, titanium, vanadium
Vanadium, chromium, tungsten

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Engineering Materials
1841 high speed steel contains

None of these
Vanadium 18%, chromium 1% and tungsten 4%
Vanadium 1%, chromium 4% and tungsten 18%
Vanadium 4%, chromium 18% and tungsten 1%

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Engineering Materials
Cupola produces following material

Malleable iron
Wrought iron
Cast iron
Pig iron

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Engineering Materials
Which is false statement about tempering? Tempering is done to

Improve machinability
Improve ductility
Release stresses
Improve toughness

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Engineering Materials
Sulphur in steel

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

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