+1 vote
in Machine Kinematics by (38.0k points)
The helix angle for double helical gears may be made up to

(a) 45°

(b) 60°

(c) 75°

(d) 90°

The question was posed to me by my college director while I was bunking the class.

Query is from Standard Proportions of Gear Systems topic in chapter Toothed Gearing & Gear Trains of Machine Kinematics

1 Answer

0 votes
by (45.7k points)
The correct choice is (a) 45°

Explanation: In single helical gears, the helix angle ranges from 20° to 35°, while for double helical gears, it may be made upto 45°.

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