Question

For the two shafts connected in parallel, find which statement is true?

• A. Torque in each shaft is the same
• B. Shear stress in each shaft is the same
• C. Angle of twist of each shaft is the same
• D. Torsional stiffness of each shaft is the same

Hint:

When shafts are connected in parallel, the angle of twist remains constant across them, but torque and shear stress depend on the individual stiffness of each shaft.

Answer 1

The Correct Option is C

In parallel connected shafts, the angle of twist is the same for each shaft. This is due to the fact that both shafts are subjected to the same torsional displacement at their ends.
- Torque in each shaft is not the same because torque is divided between the shafts based on their individual stiffness.
- Shear stress in each shaft may not be the same, as shear stress depends on the material and geometry of each shaft.
- Angle of twist in each shaft is indeed the same because both shafts experience the same total angular displacement.
- Torsional stiffness of each shaft is not necessarily the same because it depends on factors like the material and cross-sectional properties of each shaft.
Therefore, the correct statement is that the angle of twist of each shaft is the same.