When the mechanical load is constant, the rotor settles down to an absolutely constant speed with the torque angle fixed by the particular delivered power. When there is a change in load the rotor speed changes momentarily until the torque angle adjusts itself to the new power. If the load increases, the rotor slips backwards to an increased torque angle, while reduction causes the rotor to advance a smaller torque angle. Due to the M.I of the rotor either it overshoots or undershoots the mean position. During this overshooting and undershooting some K.E. is stored in the rotor which causes oscillation of the rotor periodically. This rapid forward and backward motion of the rotor as it resolves at the average constant speed is called HUNTING. DISADVANTAGES: Hunting is an objectionable characteristic of a synch motor as it produces severe mechanical stress as well as great variation in current and power taken by the motor. In order to prevent hunting, dampers (or) damping grids are employed. Damper windings are short circuited; copper bars are embedded in the faces of the field poles of the motor.