# GATE Mechanical 2014 Set 4 | Question: 25

In a rolling process, the maximum possible draft, defined as the difference between the initial and the final thickness of the metal sheet, mainly depends on which pair of the following parameters?

P: Strain
Q: Strength of the work material
R: Roll diameter
S: Roll velocity
T: Coefficient of friction between roll and work

1. Q,S
2. R,T
3. S,T
4. P,R

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