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Engineering Materials

Engineering Materials
Which of the following material has maximum ductility?

Copper
Nickel
Mild steel
Aluminium

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Engineering Materials
Ferromagnetic alpha iron exists in temperature range of

910 to 1440°C
770 to 910°C
Below 723°C
1400 to 1539°C

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

Elasticity
Malleability
Plasticity
Ductility

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Engineering Materials
The material widely used for making pendulums of clocks is

Nickel steel
High speed steel
Heat resisting steel
Stainless steel

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Engineering Materials
The percentage carbon content in wrought iron is about

0.1
0.02
0.4
2

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Engineering Materials
Gun metal contains

70 - 78% copper and rest tin
85 - 92% copper and rest tin with little lead and nickel
90% copper and 10% tin
70% copper and 30% zinc

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