16 Place the missing words to complete the following statement about propeller shafts using the following words. Fill in the Gaps : Drag and drop the value into text area. transmissionlengthdifferentialpowercompressU-joints enginetorquedrive A drive shaft must smoothly transfer while rotating, changing length, and moving up and down. The different designs of shafts all attempt to ensure a vibration-free transfer of the engine's from the transmission to the differential. This goal is complicated by the fact that the and transmission are bolted solidly to the frame of the car, whereas the is mounted on springs. As the rear wheels go over bumps in the road or changes in the road's surface, the springs or expand, changing the angle of the drive shaft between the and the differential, as well as the distance between the two. To allow for these changes, the Hotchkiss-type drive shaft is fitted with one or more to permit variations in the angle of the drive, and a slip joint that permits the effective of the drive shaft to change