Consider the following statements regarding gear tooth designing or gear drive.
1. Tooth profiles not designed as per ‘law of gearing’ will cause vibration and impact problems even at low spee(d)
2. As the gears go through their mesh, the pitch point must remain stationary on the line of centres.
3. In a correctly designed tooth profile, the line of action of successive instantaneous points of contact will pass through the stationary pitch point.
Which of the above statements are correct?
(a) 1,2 and 3 (b) 1 and 2 only
(c) 1 and 3 only (d) 2 and 3 only