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Engineering Materials

Engineering Materials
Chromium when added to steel _________ the tensile strength.

Increases
Does not effect
None of these
Decreases

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Engineering Materials
Body centered cubic space lattice is found in

Zinc, magnesium, cobalt, cadmium, antimony and bismuth
None of these
Alpha iron, tungsten, chromium and molybdenum
Gamma iron, aluminium, copper, lead, silver and nickel

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Engineering Materials
Which of the following display properties similar to that of steel?

None of these
Blackheart cast iron
Both (A) and (B)
Whiteheart cast iron

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Engineering Materials
Which is false statement about properties of aluminium?

Modulus of elasticity is fairly low
Creep strength limits its use to fairly low temperatures
Fatigue strength is not high
Wear resistance is very good

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Engineering Materials
1841 high speed steel contains

Vanadium 4%, chromium 18% and tungsten 1%
Vanadium 18%, chromium 1% and tungsten 4%
None of these
Vanadium 1%, chromium 4% and tungsten 18%

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Engineering Materials
Pig iron is the name given to

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

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