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Which of the following is a commonly used pressure angle in gears?

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+1 vote
in Machine Kinematics by (38.0k points)
Which of the following is a commonly used pressure angle in gears?

(a) 20

(b) 10

(c) 12

(d) 17

The question was asked in an online interview.

Origin of the question is Path of Contact topic in portion Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (106k points)
Right choice is (a) 20

The best explanation: The pressure angle is the angle between the tangent to the pitch circles and the line drawn normal (perpendicular) to the surface of the gear teeth. It has a set of standard values which is accepted globally, 20° is one of them.

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