Final answer:
Tech A is correct. The pinion gear in a hypoid gearset is mounted above the centerline of the crown wheel for improved performance.
Step-by-step explanation:
Tech A is correct. In a hypoid gearset, the pinion gear is mounted above the centerline of the crown wheel. This design allows for more contact between the gear teeth, resulting in a smoother and quieter operation. On the other hand, Tech B's statement about generoid gearset is incorrect. There is no such thing as a generoid gearset. It seems that Tech B may have made a mistake or confused it with another type of gearset.