Which of the following factors can cause misalignment of the teeth on the pinion relative to those on the gear?
1. Inaccurate gear teeth
2. Misalignment of the axes of shafts carrying gears
3. Thermal distortions during operation
Select the correct answer using the code given below
1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
1, 2 and 3