Question: The shaft, as shown in Fig. (3), is driven by pulley B from an electric motor. Another belt drive from pulley A is running

The shaft, as shown in Fig. (3), is driven by pulley B from an electric motor. Another belt drive from pulley

The shaft, as shown in Fig. (3), is driven by pulley B from an electric motor. Another belt drive from pulley A is running a compressor. The belt tensions for pulley A are 1500 N and 600 N. The ratio of belt tensions for pulley B is 3.5. B +004 -150- C -100 D B A TA TB2 Fig. (3) All dimensions in mm. and the diameter of pulley B is 480 mm. The The diameter of pulley A is 150 m allowable tensile stress for the shaft material is 170 MPa and the allowable shear stress is 85 MPa. Taking torsion and bending factors as 1.25 and 1.75 respectively, find the shaft diameter. Also find out the dimensions for a hollow shaft with outside diameter limited to 30 mm. Compare the weights of the two shafts.

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