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Engineering Materials

Engineering Materials
Nickel when added to copper improves

Machinability
Strength and ductility
Hardness
Hardness and strength

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Engineering Materials
Heavy duty leaf and coil springs contain carbon of the following order

0.002
0.008
0.005
0.01

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Engineering Materials
The material in which the atoms are arranged chaotically, is called

Mesomorphous material
Amorphous material
Crystalline material
None of these

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Engineering Materials
Age hardening is related to

Duralumin
Brass
Copper
Silver

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Engineering Materials
The steel widely used for motor car crankshafts is

Nickel steel
Silicon steel
Chrome steel
Nickel-chrome steel

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Engineering Materials
The temperature at which ferromagnetic alpha iron transforms to paramagnetic alpha iron is

770°C
910°C
Below recrystallization temperature
1050°C

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