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Engineering Materials

Engineering Materials
The alloying element which reduces the formation of iron sulphide in steel is

Chromium
Vanadium
Nickel
Manganese

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Engineering Materials
Steel with __________ carbon is known as hypo-eutectoid steel.

0.008
None of these
Above 0.8%
Below 0.8%

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Engineering Materials
Which of the following represents the allotropic forms of iron?

Body centered cubic iron and face centered cubic iron
Alpha iron and beta iron
Alpha iron, gamma from and delta iron
Alpha iron, beta iron and gamma iron

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Engineering Materials
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Silicon
Manganese
Sulphur
Phosphorus

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Engineering Materials
Tungsten when added to steel __________ the critical temperature.

Raises
Lowers
None of these
Does not effect

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Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Hastelloy
Invar
Silver metal
Duralumin

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