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Mechanical Definitions

Y : Symbol for admittance. It is reciprocal of impedance 'Z'.

Y Axis : It is the vertical axis of a two-dimensional Cartesian coordinate system.

Yaw : It is the angular displacement of a moving body around an axis which is perpendicular to the line of motion and to topside of the body. In robotics, it is the rotation in a horizontal plane when the arm is entered horizontally.

Yoke : It is a slotted crosshead used instead of two other parts. In other words, it is a piece of ferromagnetic material which is used for connecting permanently two or more magnetic cores and thus, complete a magnetic circuit without surrounding it by a winding of any kind.