What is the correct answer?


In worm, gears, pitch lead angle is

A. Half the angle between two inclined faces in axial plane

B. The angle between the tangent to the pitch helix and the plane of rotation

C. The angle between the tangent to the pitch helix and an element of the cylinder

D. None of the above

Correct Answer :

B. The angle between the tangent to the pitch helix and the plane of rotation

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