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Engineering Materials

Engineering Materials
The defect which takes place due to imperfect packing of atoms during crystallization is known as

Surface defect
Point defect
None of these
Line defect

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Engineering Materials
Delta iron occurs at temperature of

Between 910°C and 1400°C
Between 1400°C and 1539°C
Above melting point
Room temperature

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Engineering Materials
Cartridge brass can be

Formed into tube
Drawn into wires
Any one of these
Cold rolled into sheets

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Engineering Materials
Eutectoid steel contains following percentage of carbon

0.003
0.0063
0.008
0.0002

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Engineering Materials
The hardness is the property of a material due to which it

Can be drawn into wires
Can be rolled or hammered into thin sheets
Can cut another metal
Breaks with little permanent distortion

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Engineering Materials
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Pearlite and cementite
Mainly pearlite
Ferrite and pearlite
Mainly ferrite

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