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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