Question

A shaft is required to transmit a power of 25 kW at 360 rpm. The force analysis due to attached parts results in Bending Moment of 830 Nm at a section between bearings. If permissible stresses in the shaft are 60 N/mm\(^2\) in bending and 40 N/mm\(^2\) in shear, calculate the diameter of the shaft.

• A. 51 mm
• B. 41 mm
• C. 36 mm
• D. 60 mm

Hint:

In combined loading shaft design, always calculate using the equivalent torque formula.
Ensure that you convert torque and bending moment to $\text{N}\cdot\text{mm}$ and stress to $\text{N/mm}^2$ so that the diameter is obtained directly in millimeters.

Answer 1

The Correct Option is A