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| Q. |
Refer to fig
|
| A. | 8mm |
| B. | 9mm |
| C. | 10mm |
| D. | 11mm |
| Answer» A. 8mm | |
| Explanation: permissible hear stress=0.5 x 400 /4 =50n/mm². p=2 (π xd²/4) x τ or 5000=2 x π x d² x 50/4 or d=7.97mm. | |
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