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Two shafts A and B are made of the same material. The diameter of shaft B is twice that of shaft A. The ratio of power which can be transmitted by shaft A to that of shaft B is (If maximum shear stress remains the same)
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- 1/2
- 1/4
- 1/8
- 1/16
Correct Option: C
dB = 2dA.
τB = τA
 |  | = | | | 2 | A | 2 | B |
| = | ||||||
| TB | JB | rA |
| = | = | |||||
| 24 | 23 | 8 |
