The centre distance between two meshing involute gears is equal to

1.	The centre distance between two meshing involute gears is equal to
A.	Sum of base circle radii/cosφ
B.	Difference of base circle radii/cosφ
C.	Sum of pitch circle radii/cosφ
D.	Difference of pitch circle radii/cosφ
Answer» B. Difference of base circle radii/cosφ

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The centre distance between two meshing involute gears is equal to

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