U- Joint:Hooke's joint is a linkage that transmits rotation between two non parallel shafts whose axes are coplanar but not coinciding., and is commonly used in shafts that transmit rotary motion. It is used in automobiles where it is used to transmit power from the gear box of the engine to the rear axle.The driving shaft rotates at a uniform angular speed, where as the driven shaft rotates at a continuously varying angular speed. ...
