Engineering Materials
Stress relaxation is the phenomenon

In which deformation tends to loosen the joint and produces a stress reduced
Stress reduces on increasing load
In which parts are not loaded
In which stress remains constant on increasing load

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Engineering Materials
The brown smoke during the operation of a Bessemer converter indicates that the

The converter must be titled to remove the contents of the converter
The brown smoke does not occur during the operation of a Bessemer converter
Air is burning out silicon and manganese
Silicon and manganese has burnt and carbon has started oxidizing

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