Final answer:
The Rzeppa type joint is indeed the most commonly used outer joint on FWD vehicles, known for its ability to transmit torque while allowing a degree of angular motion.
Step-by-step explanation:
The statement given about the Rzeppa type joint is indeed true. The Rzeppa joint, also known as a Rzeppa constant-velocity joint, is commonly used as an outer joint in FWD (front-wheel drive) vehicles. This joint was developed by Alfred H. Rzeppa in the early 20th century and it's designed with grooved ball tracks to transmit torque while allowing a wide range of angular motion, which is essential in vehicle movement when turning. Therefore, when considering the design and requirements of FWD vehicles, the Rzeppa type joint plays an instrumental role, making it the most commonly used outer joint.
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