Compared to gears with 20° pressure angle involute full depth teeth, those with 20° pressure angle and stub teeth have
1. Smaller addendum
2. Smaller dedendum
3. Smaller tooth thickness
4. Greater bending strength
Which of these statements are correct?
1
1, 2 and 3
2
1, 2 and 4
3
1, 3 and 4
4
2, 3 and 4