Question

10. A shaft made of steel receives 7.5 kW power at 1500 r.p.m. A pulley mounted on the shaft as shown in Figure below has ratio of belt tensions 4. The gear forces are as follows : Ft= 1590 N; Fr= 580 N Design the shaft diameter by maximum shear stress theory. The shaft material has the following properties : Ultimate tensile strength = 720 MPa; Yield strength = 380 MPa; Factor of safety = 1.5

Answer 1

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