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Engineering Materials

Engineering Materials
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is

Invar
Silver metal
Duralumin
Hastelloy

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

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

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Engineering Materials
There are fourteen atoms in a unit cell of

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

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Engineering Materials
The ability of a material to resist softening at high temperature is known as

Hot hardness
Hot tempering
Creep
Fatigue

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Engineering Materials
The percentage carbon content in wrought iron is about

0.4
0.02
0.1
2

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

Silicon bronze
Phosphor bronze
Monel metal
White metal

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