Question

Bevel gears used for connecting intersecting shafts at 90^0 and having speed ratio 1 : 1 is known as

(a) bevel gears

(b) beveloid gears

(c) mitre gears

(d) none of the mentioned

This question was posed to me in an online interview.

This interesting question is from Types of Gears in division Toothed Gearing & Gear Trains of Machine Kinematics

Answer 1

Correct answer is (c) mitre gears

To explain: Bevel gears used for connecting intersecting shafts at 90^0 and having speed ratio 1 : 1 is known as mitre gears.

Bevel gears with basic pressure angle of 20^0 with long and short addendums for ratios other than 1:1 to avoid undercut pinions and to increase strength are gleason bevel gears.