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Engineering Materials

Engineering Materials
The hardness of steel increases if it contains

Austenite
Martensite
Cementite
Pearlite

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Engineering Materials
Cold rolled steel sheets contain carbon of the following order

0.001
0.002
0.006
0.004

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Engineering Materials
Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

Phosphor bronze
Monel metal
Nichrome
Babbitt metal

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Engineering Materials
The bond formed by transferring electrons from one atom to another is called

Ionic bond
Covalent bond
Metallic bond
None of these

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Engineering Materials
Tungsten in high speed steel provides

Hot hardness
Sharp cutting edge
Toughness
Wear resistance

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Engineering Materials
In malleable iron, carbon is present in the form of

Flakes
Free carbon
Cementite
Nodular aggregates of graphite

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