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Engineering Materials

Engineering Materials
Eutectoid steel contains following percentage of carbon

0.003
0.0063
0.008
0.0002

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Engineering Materials
The toughness of a material __________ when it is heated.

Increases
None of these
Decreases
Remain same

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Engineering Materials
The strength is the ability of a material to resist

Deformation under stress
None of these
Externally applied forces with breakdown or yielding
Fracture due to high impact loads

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

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

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Engineering Materials
The charge is fed into the blast furnace through the

Tyres
Bosh
Stack
Throat

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

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

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