Workshop Technology
In a four high rolling mill, the diameter of backing up rolls is ________ the diameter of working rolls.

None of these
Smaller than
Equal to
Larger than

ANSWER DOWNLOAD EXAMIANS APP

Workshop Technology
During hot working of metals

Grain structure of the metal is refined
Porosity of the metal is largely eliminated
All of the listed here
Mechanical properties are improved due to refinement of grains

ANSWER DOWNLOAD EXAMIANS APP