Question

Pressure angle remains constant in case of involute profile.

(a) True

(b) False

This query came up during lab work.

This theoretical question is from the Terminology of Spur Gears concept in section Rolling Contact Bearings, Spur Gears and Helical Gears of Machine Design

Answer 1

Right choice is (a) True

Here's an easy explanation: The common normal always passes through the pitch point and thus maintain the constant inclination.