For an involute gear, the ratio of base circle radius and pitch circl

1.	For an involute gear, the ratio of base circle radius and pitch circle radius is equal to
A.	sinφ
B.	cosφ
C.	secφ
D.	cosecφ
Answer» C. secφ

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For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

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