... from uprightness 45° 1.Stator: composed of frame,magnetic pole and magnetic loop. The stator frame is made of steel or casting steel, ... out blow pipeline aeration etc. 3.Armature: composed of shaft, magnetic core, coil, fan, commutator etc. Shaft is made of ... -alone DC generator can conclude magnetic field rheostat; DC electrical machine unit can conclude magnetic field rheostat,pedestal, coupling and ...