03:A 42.0 mm-thick plate made of low carbon steel is to be reduced to 34.0 mm in one pass in a rollingoperation. As the thickness is reduced, the plate widens by 4%. The yield strength of the steel plate is 174MPa and the tensile strength is 290 MPa. The entrance speed of the plate is 15.0 m/min. The roll radius is250 mm and rotational speed is 49.0 rev/min. Determine:1. Minimum required coefficient of friction that would make this rolling operation possible.2. Exit velocity of the plate.04:A metal has a flow curve with strength coefficient is 850 MPa and strain- hardening exponent is 0.30. Atensile specimen of the metal with gauge length of 100 mm is stretched to a length of 157 mm. Determinethe flow stress at the new length and the average flow stress that the metal has been subjected to during3. Forward slip.the deformation.05:A plate that is 250 mm wide and 25 mm thick is to be reduced in a single pass in a two-high rolling millto a thickness of 20 mm. the roll has a radius of 500 mm, and its speed is 30 m/min. the work materialhas a strength coefficient of 240 MPa and a strain hardening exponent of 0.2. Determine:I. roll force.2. Roll torque.3. Power required to accomplish this operation.

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A 42.0 mm-thick plate made of low carbon steel is to be reduced to 34.0 mm in one pass in a rolling operation. As the thickness is reduced, the plate widens by 4%. The yield strength of the steel plate is 174 MPa and the tensile strength is 290 MPa. The entrance speed of the plate is 15.0 m/min. The roll radius is 250 mm and rotational speed is 49.0 rev/min. Determine: 1. Minimum required coefficient of friction that would make this rolling operation possible. 2. Exit velocity of the plate. 3. Forward slip.

A 42.0 mm-thick plate made of low carbon steel is to be reduced to 34.0 mm in one pass in a rolling operation. As the thickness is reduced, the plate widens by 4%. The yield strength of the steel plate is 174 MPa and the tensile strength is 290 MPa. The entrance speed of the plate is 15.0 m/min. The roll radius is 250 mm and rotational speed is 49.0 rev/min. Determine: 1. Minimum required coefficient of friction that would make this rolling operation possible. 2. Exit velocity of the plate. 3. Forward slip.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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