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Engineering Materials

Engineering Materials
An example of amorphous material is

Zinc
Silver
Glass
Lead

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Engineering Materials
The alloy used for making electrical resistances and heating elements is

Invar
Elinvar
Magnin
Nichrome

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

Chromium
Vanadium
Nickel
Tungsten

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Engineering Materials
Vanadium in high speed steels

Promotes decarburisation
Forms very hard carbides and thus increases wear resistance
Provides high hot hardness
Promotes retention of austenite

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Engineering Materials
Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Hypereutectic cast irons
Hypoeutectic cast irons
None of these
Eutectic cast irons

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Engineering Materials
Steel containing ferrite and pearlite is

Tough
Soft
Hard
Hard and tough

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MORE MCQ ON Engineering Materials

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