8.21 (B). (a) A solid circular steel shaft is subjected to a bending moment of 10 kN m and is required to transmit amaximum power of 550 kW at 420 rev/min. Assuming the shaft to be simply supported at each end and neglecting theshaft weight, determine the ratio of the maximum principal stress to the maximum shear stress induced in the shaftmaterial.(b) A 300 mm external diameter and 200 mm internal diameter hollow steel shaft operates under the followingconditions:power transmitted = 2280 kW; maximum torque = 1.2 x mean torque; maximum bending moment= 11 kN m; maximum end thrust = 66 kN; maximum principal compressive stress = 40 MN/m².Determine the maximum safe speed of rotation for the shaft.[1.625:1; 169 rev/min.]

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8.21 (B). (a) A solid circular steel shaft is subjected to a bending moment of 10 kN m and is required to transmit a maximum power of 550 kW at 420 rev/min. Assuming the shaft to be simply supported at each end and neglecting the shaft weight, determine the ratio of the maximum principal stress to the maximum shear stress induced in the shaft material.

8.21 (B). (a) A solid circular steel shaft is subjected to a bending moment of 10 kN m and is required to transmit a maximum power of 550 kW at 420 rev/min. Assuming the shaft to be simply supported at each end and neglecting the shaft weight, determine the ratio of the maximum principal stress to the maximum shear stress induced in the shaft material.

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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