... sufficiently to rotate the rotor. The higher the ratio RIX,,, the higher will be the starting torque, as RIX,, will move closer to the applied voltage V, and help to increase the phase shift. ... stator or the overhangs of the stator windings and bearings etc. There are many cooling systems adopted by various rnanu- facturers, depending upon the size of the machine and the heat generated ... blows out the internal hot air of the tubes to the atmosphere and replaces it with fresh cool air from the other side. This forms a separate external cooling circuit. 2 ClosedAir Circuit Water...