Consider the following statements: In case of helical gears, teeth are cut at an angle to the axis of rotation of the gears.
1. Helix angle introduces another ratio called axial contact ratio
2. Transverse contact ratio is equal to axial contact ratio in helical gears.
3. Large transverse contact ratio does not allow multiple teeth to share the load.
4. Large axial contact ratio will cause larger axial force component.
Which of the above statements are correct?
(a) 1 and 2 (b) 2 and 3
(c) 1 and 4 (d) 3 and 4