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Engineering Materials

Engineering Materials
The lower critical point for all steels is

913°C
700°C
600°C
723°C

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Engineering Materials
Pipes for bicycle frames are made of

Hot rolled steel
Cast steel
Forged steel
Cold rolled steel

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Engineering Materials
Sulphur in cast iron

Aids fusibility and fluidity
Make the iron white and hard
Makes the iron soft and easily machinable
Increases hardness and brittleness

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Engineering Materials
Which is the false statement about wrought iron? It has

Ability of hold protective coating
Uniform strength in all directions
High ductility
High resistance to rusting and corrosion

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Engineering Materials
A small percentage of boron is added to steel in order to

Increase wear resistance
Increase endurance strength
Increase hardenability
Reduce machinability

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Engineering Materials
White cast iron contains carbon in the form of

White carbon
Graphite
Cementite
Free carbon

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