A strip of 120 mm width and 8 mm thickness is rolled between two 300 mm diameter rolls to get a strip of 120 mm width and 72 mm thickness The speed of the strip at the exit is 30 mmin There is no front or back tension Assuming uniform roll pressure of 200 MPa in the roll bite and 100 mechanical efficiency the minimum total power in kW required to drive the two roll is
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A strip of 120 mm width and 8 mm thickness is rolled between two 300 mm-diameter rolls to get a strip of 120 mm width and 7.2 mm thickness. The speed of the strip at the exit is 30 m/min. There is no front or back tension. Assuming uniform roll pressure of 200 MPa in the roll bite and 100% mechanical efficiency, the minimum total power (in kW) required to drive the two roll is _______.

A. 9.0
B. 9.6
C. 10.4
D. 11.8



By:Oshal-Borkar

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