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| Q. |
The main difference between rigid and flexible coupling for shafts transmitting power is |
| A. | the number of coupling bolts are more in flexible coupling than in rigid coupling |
| B. | a flexible element is inserted around coupling bolts in one of the flanges |
| C. | There is a protective flange over bolts in the case of flexible coupling |
| D. | none of the above |
| E. | Cast steel |
| Answer» B. a flexible element is inserted around coupling bolts in one of the flanges | |
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