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Engineering Materials

Engineering Materials
The property of a material which enables it to retain the deformation permanently, is called

Brittleness
Ductility
Plasticity
Malleability

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Engineering Materials
Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio

50 : 20 : 20 : 10
40 : 30 : 20 : 10
50 : 20 : 10 : 20
30 : 20 : 30 : 20

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Engineering Materials
The toughness of a material __________ when it is heated.

Decreases
None of these
Remain same
Increases

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Engineering Materials
An example of amorphous material is

Lead
Silver
Glass
Zinc

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Engineering Materials
Perminvar alloy having constant permeability is an alloy of

Nickel, copper and iron
Copper, nickel and antimony
Nickel, copper and zinc
Iron, zinc and bismuth

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

Line defect
Point defect
Volumetric defect
Plane defect

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MORE MCQ ON Engineering Materials

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