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Engineering Materials

Engineering Materials
Which of the following metal is used for nuclear energy?

Thorium
Uranium
All of these
Niobium

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Engineering Materials
Drop forging dies contain carbon of the order of

0.7 to 0.9%
0.1 to 0.2%
0.6 to 0.7%
0.25 to 0.5%

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Engineering Materials
Which is false statement about annealing? Annealing is done to

Soften material
Improve machining characteristic
Harden steel slightly
Relieve stresses

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Engineering Materials
When filing or machining cast iron makes our hands black, then it shows that ________ is present in cast iron.

None of these
Both A and B
Free graphite
Cementite

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Engineering Materials
Taps dies and drills contain carbon

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

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Engineering Materials
Maximum percentage of carbon in ferrite is

0.001
0.0025
0.00025
0.0006

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