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Engineering Materials

Engineering Materials
Taps dies and drills contain carbon

Below 0.5%
Above 2.2%
Below 1%
Above 1%

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Engineering Materials
Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Manganese
Phosphorus
Sulphur
Silicon

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

910°C
770°C
1050°C
Below recrystallization temperature

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Engineering Materials
German silver is an alloy of

Nickel and copper
Refined silver
Silver and some impurities
Nickel, Copper and zinc

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Engineering Materials
Cupola produces following material

Malleable iron
Cast iron
Wrought iron
Pig iron

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Engineering Materials
In compression, a prism of brittle material will break

By crushing into thousands of pieces
By forming a bulge
In direction perpendicular to application of load
By shearing along oblique plane

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