1.

Which one of the correct relationship between surface velocity of the roils\[({{V}_{r}})\], entrance velocity of work \[({{V}_{0}})\] and exit velocity of work \[({{V}_{f}})\] in rolling?

A. \[{{V}_{0}}<{{V}_{r}}<{{V}_{f}}\]              
B. \[{{V}_{f}}<{{V}_{r}}<{{V}_{0}}\]
C. \[{{V}_{r}}<{{V}_{f}}<{{V}_{0}}\]              
D. \[{{V}_{0}}<{{V}_{f}}<{{V}_{r}}\]
Answer» B. \[{{V}_{f}}<{{V}_{r}}<{{V}_{0}}\]


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