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Engineering Materials

Engineering Materials
The ability of a material to resist softening at high temperature is known as

Creep
Hot hardness
Fatigue
Hot tempering

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Engineering Materials
Silicon when added to copper improves

Strength and ductility
Hardness and strength
Machinability
Hardness

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Engineering Materials
The aluminium alloy, mainly used, for anodized utensil manufacture, is

Hindalium
Duralumin
Y-alloy
Magnalium

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Engineering Materials
The lower critical temperature

Decreases as the carbon content in steel increases
Increases as the carbon content in steel increases
Depends upon the rate of heating
Is same for all steels

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Engineering Materials
Cast iron is manufactured in

Open hearth furnace
Cupola
Bessemer converter
Blast furnace

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Engineering Materials
A reversible change in the atomic structure of steel with corresponding change in the properties is known as

Allotropic change
Molecular change
Solidus change
Physical change

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