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Engineering Materials

Engineering Materials
The metal suitable for bearings subjected to heavy loads, is

Monel metal
Phosphor bronze
Silicon bronze
White metal

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

Nodular aggregates of graphite
Cementite
Free carbon
Flakes

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Engineering Materials
Ductility of a material can be defined as

Ability to recover its original form
Ability to undergo large permanent deformations in compression
Ability to undergo large permanent deformations in tension
All of these

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Engineering Materials
Hardness of upper bainite (acicular structure) is about

RC 65
RC 57
RC 48
RC 80

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Engineering Materials
Hematite iron ore contains iron about

0.45
0.55
0.7
0.3

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

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

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