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Engineering Materials

Engineering Materials
Depth of hardness of steel is increased by addition of

Vanadium
Chromium
Nickel
Tungsten

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Engineering Materials
Ferromagnetic alpha iron exists in temperature range of

910 to 1440°C
770 to 910°C
1400 to 1539°C
Below 723°C

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Engineering Materials
High carbon steel carries carbon percentage

0.6 to 0.8%
0.3 to 0.6%
0.8 to 1.5%
0.1 to 0.3%

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Engineering Materials
Which of the following constituents of steels is softest and least strong?

Cementite
Ferrite
Pearlite
Austenite

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Engineering Materials
Which of the following material has nearly zero coefficient of expansion?

Stainless steel
Invar
Heat resisting steel
High speed steel

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Engineering Materials
Pig iron is the name given to

Product of blast furnace made by reduction of iron ore
Iron in molten form in the ladles
Raw material for blast furnace
Iron containing huge quantities of carbon

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