In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

In order to have smooth operation, the minimum number of teeth on the

1.	In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be
A.	15
B.	17
C.	21
D.	25
Answer» C. 21

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In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

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