In a four high rolling mill, there are four rolls out of which
A
One is working roll and three are backing up rolls
B
Two are working rolls and two are backing up rolls
C
Three are working rolls and one is backing up roll
D
All of the four are working rolls
Correct Answer: Two are working rolls and two are backing up rolls
In a four high rolling mill, there are four rolls out of which Two are working rolls and two are backing up rolls