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The outside diameter of an involute gear is equal to pitch circle diameter plus

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+1 vote
in Machine Kinematics by (38.0k points)
The outside diameter of an involute gear is equal to pitch circle diameter plus

(a) 2 addendum

(b) 2 dedendum

(c) 3.1416 module

(d) 2.157 module

This question was addressed to me during a job interview.

This interesting question is from Standard Proportions of Gear Systems in portion Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (106k points)
Right choice is (a) 2 addendum

For explanation I would say: Addendum is the portion of gear tooth above the pitch circle diameter (PCD). Therefore outside diameter of involute gear = PCD + 2 addendum.

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