+1 vote
in Machine Kinematics by (38.0k points)
A spur gear with pitch circle diameter D has number of teeth T. The module m is defined as

(a) m = d / T

(b) m = T / D

(c) m = π D / T

(d) m = D.T

I have been asked this question during an interview.

Enquiry is from Spur Gears topic in section Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (92.2k points)
Correct answer is (a) m = d / T

To elaborate: Module is the ratio of the pitch circle diameter in millimetres to the number of teeth. It is usually denoted by m. Mathematically,

Module, m = D / T.

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