For continuous transmission of motion, the contact ratio i.e. n must a

1.	For continuous transmission of motion, the contact ratio i.e. n must always be _______
A.	equal to 1
B.	equal to 0
C.	more than unity
D.	less than unity
Answer» D. less than unity

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For continuous transmission of motion, the contact ratio i.e. n must always be _______

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