A shock-free coupling for a low-power mechanical drive is to be made from a pair of concentric cylinders. The annular space between the cylinders is to be filled with oil. The drive must transmit power, P = 10 W. Other dimensions and properties are as shown. Neglect any bearing friction and end effects. Assume the minimum practical gap clearance d for the device is d = 0.25 mm. Determine the viscosity that should be specified to satisfy the requirement for this device. P = 10 W L = 20 mm R= 10 mm wz 2 9,000 rpm (outer cylinder) w = 10,000 rpm 8 = Gap clearance 2.02 N. s/m² 3.45 N. s/m² 0.54 N.s/m² 1.63 N. s/m² A B C D

A shock-free coupling for a low-power mechanical drive is to be made from a pair of concentric cylinders. The annular space between the cylinders is to be filled with oil. The drive must transmit power, P = 10 W. Other dimensions and properties are as shown. Neglect any bearing friction and end effects. Assume the minimum practical gap clearance d for the device is d = 0.25 mm. Determine the viscosity that should be specified to satisfy the requirement for this device. P = 10 W L = 20 mm R= 10 mm wz 2 9,000 rpm (outer cylinder) w = 10,000 rpm 8 = Gap clearance 2.02 N. s/m² 3.45 N. s/m² 0.54 N.s/m² 1.63 N. s/m² A B C D

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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