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Engineering Materials

Engineering Materials
Weld decay is the phenomenon found with

Cast iron
Stainless steel
Mild steel
Nonferrous materials

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Engineering Materials
Manganese is added in low carbon steel to

Make the steel ductile and of good bending qualities
Make the steel tougher and harder
Raise the yield point
All of these

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Engineering Materials
The alloy used for making electrical resistances and heating elements is

Elinvar
Magnin
Invar
Nichrome

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Engineering Materials
By severely deforming a metal in a particular direction it becomes

Malleable
Homogeneous
Ductile
Anisotropic

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Engineering Materials
Dislocations in materials refer to the following type of defect

Volumetric defect
Point defect
Line defect
Plane defect

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Engineering Materials
A material is known as allotropic or polymorphic if it

Exists in several crystal forms at different temperatures
Responds to heat treatment
Has its atoms distributed in a random pattern
Has a fixed structure under all conditions

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