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Engineering Materials

Engineering Materials
The percentage of carbon in grey iron castings usually varies between

0.5 to 1%
2.5 to 4.5%
5 to 7%
0.012

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Engineering Materials
Sulphur in cast iron

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

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Engineering Materials
Iron ore is usually found in the form of

Sulphides
Oxides
All of these
Carbonates

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Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Duralumin
Magnalium
Y-alloy
Hindalium

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Engineering Materials
Constantan an alloy used in thermocouples is an alloy of

Copper and tin
Copper and iron
Copper and zinc
Copper and nickel

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Engineering Materials
Maximum percentage of carbon in ferrite is

0.0025
0.00025
0.0006
0.001

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