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Engineering Materials

Engineering Materials
Lead is poured into the joint between two pipes. These pipes may be made of

Concrete
Vitrified clay
Cast iron
Asbestos cement

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Engineering Materials
The machinability of aluminium increases when _________ is added to aluminium.

Magnesium
Lead and bismuth
Silicon
Copper

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Engineering Materials
Manganese is added in low carbon steel to

Raise the yield point
All of these
Make the steel ductile and of good bending qualities
Make the steel tougher and harder

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Engineering Materials
Delta iron occurs at temperature of

Between 1400°C and 1539°C
Between 910°C and 1400°C
Above melting point
Room temperature

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Engineering Materials
Following elements have face-centered cubic structure

Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt
All of these
A iron (below 910°C and between 1400 to 1539°C), W
Mg, Zn, Ti, Zr, Br, Cd

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Engineering Materials
Age hardening is related to

Silver
Duralumin
Brass
Copper

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