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Engineering Materials

Engineering Materials
Maximum percentage of carbon in austenite is

0.008
0.00025
0.0026
0.017

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Engineering Materials
The property of a material essential for spring materials is

Resilience
Stiffness
Plasticity
Ductility

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

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

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Engineering Materials
Cast iron is characterized by minimum of following percentage of carbon

0.02
0.013
0.002
0.008

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

Duralumin
Silver metal
Invar
Hastelloy

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Engineering Materials
Which of the following property is desirable for materials used in tools and machines?

Plasticity
Ductility
Elasticity
Malleability

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