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Engineering Materials

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

None of these
Less than
More than
Equal to

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Engineering Materials
Ball bearings are, usually, made from

Chrome steel
Medium carbon steel
High carbon steel
Low carbon steel

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Engineering Materials
There are fourteen atoms in a unit cell of

None of these
Body centered cubic space lattice
Close packed hexagonal space lattice
Face centered cubic space lattice

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Engineering Materials
For a steel containing 0.8% carbon

There is only one critical point
There can be any number of critical points
There are two critical points
There is no critical point

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

Free carbon
Spheroids
Flakes
Cementite

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Engineering Materials
Heavy duty leaf and coil springs contain carbon of the following order

0.008
0.01
0.002
0.005

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