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Engineering Materials

Engineering Materials
The lower critical point for all steels is

700°C
600°C
913°C
723°C

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Engineering Materials
Isotropic materials are those which have the same

Electric and magnetic properties in all directions
Thermal properties in all directions
Elastic properties in all directions
Stresses induced in all directions

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Engineering Materials
Beryllium bronze contains

97.75% copper and 2.25% beryllium
80% copper and 20% beryllium
60% copper and 40% beryllium
99% copper and 1% beryllium

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Engineering Materials
Eutectoid steel contains following percentage of carbon

0.003
0.0063
0.0002
0.008

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Engineering Materials
Iron is

Ferromagnetic
Paramagnetic
Ferroelectric
Dielectric

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Engineering Materials
Ductility of a material can be defined as

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

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