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Engineering Materials

Engineering Materials
Taps dies and drills contain carbon

Above 2.2%
Below 0.5%
Above 1%
Below 1%

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Engineering Materials
High carbon steel carries carbon percentage

0.3 to 0.6%
0.1 to 0.3%
0.6 to 0.8%
0.8 to 1.5%

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Engineering Materials
Which of the following pipes is least corrosion resistant?

Wrought iron
Brass
Mild steel
Cast iron

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Engineering Materials
The percentage of carbon in grey iron castings usually varies between

0.012
2.5 to 4.5%
0.5 to 1%
5 to 7%

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Engineering Materials
The defect which takes place due to imperfect packing of atoms during crystallization is known as

Point defect
Line defect
None of these
Surface defect

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Engineering Materials
The toughness of a material __________ when it is heated.

Increases
None of these
Remain same
Decreases

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