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Engineering Materials

Engineering Materials
Which of the following material has maximum ductility?

Copper
Mild steel
Aluminium
Nickel

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Engineering Materials
Corundum contains more than 95%

MgO
SiO2
Al2O3
Steel

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

0.008
0.002
0.005
0.01

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Engineering Materials
Manganese is added in low carbon steel to

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

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Engineering Materials
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Remain same
Decrease
First increase and then decrease
Increase

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Engineering Materials
An engineer's hammer is made of

Forged steel
Mild steel
High carbon steel
Cast iron

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