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Engineering Materials

Engineering Materials
Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

More than
None of these
Equal to
Less than

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Engineering Materials
Which of the following metal shrinks most from molten state to solid state?

Admiralty metal
Cast iron
Brass
Cast steel

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Engineering Materials
Cementite consist of

13% cementite and 87% ferrite
6.67% carbon and 93.33% iron
13% ferrite and 87% cementite
13% carbon and 87% ferrite

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Engineering Materials
Which is false statement about normalizing? Normalizing is done to

Reduce segregation in casting
Induce stresses
Refine grain structure
Improve mechanical properties

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Engineering Materials
The machinability of steel is improved by adding

Nickel and chromium
Sulphur, lead and phosphorus
Chromium
Nickel

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Engineering Materials
Drop forging dies contain carbon of the order of

0.25 to 0.5%
0.1 to 0.2%
0.7 to 0.9%
0.6 to 0.7%

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