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Engineering Materials

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

0.005
0.008
0.002
0.01

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Engineering Materials
When medium carbon steel is heated to coarsening temperature

The grain size increases very rapidly
The average grain size is a minimum
There is no change in grain size
The grain size first increases and then decreases very rapidly

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

Crystalline material
Amorphous material
Mesomorphous material
None of these

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Engineering Materials
Cupola produces following material

Cast iron
Malleable iron
Wrought iron
Pig iron

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Engineering Materials
Mild steel belongs to the following category

Alloy steel
Medium carbon steel
Low carbon steel
High carbon steel

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Engineering Materials
Hardness of martensite is about

RC 48
RC 65
RC 80
RC 57

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