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Engineering Materials

Engineering Materials
The hardness of steel increases if it contains

Martensite
Austenite
Cementite
Pearlite

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Engineering Materials
The percentage of carbon in grey iron castings usually varies between

2.5 to 4.5%
5 to 7%
0.5 to 1%
0.012

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Engineering Materials
An example of amorphous material is

Silver
Zinc
Glass
Lead

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Engineering Materials
Balls for ball bearings are made of

Mild steel
Carbon-chrome steel
Cast iron
Stainless steel

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Engineering Materials
The lower critical point for all steels is

600°C
723°C
913°C
700°C

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Engineering Materials
Tungsten in high speed steel provides

Hot hardness
Toughness
Wear resistance
Sharp cutting edge

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MORE MCQ ON Engineering Materials

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