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Engineering Materials

Engineering Materials
The portion of the blast furnace below its widest cross-section is called

Stack
Bosh
Throat
Hearth

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Engineering Materials
Tensile strength of steel can be safely increased by

Adding carbon up to 2.8%
Adding small quantities of copper
Adding carbon up to 6.3%
Adding carbon up to 0.83%

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Engineering Materials
Compressive strength of grey cast iron in tonnes/cm is of the order of

35
710
1015
57

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Engineering Materials
Ferromagnetic alpha iron exists in temperature range of

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

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Engineering Materials
Drop forging dies contain carbon of the order of

0.6 to 0.7%
0.1 to 0.2%
0.25 to 0.5%
0.7 to 0.9%

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Engineering Materials
Nodular cast iron is produced by adding ________ to the molten cast iron.

Copper
Nickel
Chromium
Magnesium

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