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Engineering Materials

Engineering Materials
Eutectoid reaction occurs at

1147°C
1493°C
723°C
600°C

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Engineering Materials
The tensile strength of wrought iron is maximum

Along the lines of slag distribution
None of these
Uniform in all directions
Perpendicular to lines of slag distribution

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Engineering Materials
Which of the following steel making process is being adopted at Rourkela (in India) Steel Plant?

LD process
Open hearth process
Bessemer process
Electric process

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Engineering Materials
Eutectoid steel contains following percentage of carbon

0.003
0.0002
0.0063
0.008

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Engineering Materials
In nodular iron, graphite is in the form of

Flakes
Free carbon
Cementite
Spheroids

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Engineering Materials
When low carbon steel is heated up to lower critical temperature

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

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