The ratio of strain energy stored by a hollow shaft of external diameter D and internal diameter d and strain energy stored by a solid shaft of diameter D is

- 1
  
  $\frac{D^{2} + d^{2}}{D^{2}}$
- 2
  
  $\frac{D^{2} - d^{2}}{D^{2}}$
- 3
  
  $\frac{D^{4} - d^{4}}{D^{4}}$
- 4
  
  $\frac{D^{4} + d^{4}}{D^{4}}$

Display Comments

Leave a comment

Login at first then you can submit comment. Click here to login.