Why DC motors have open slots?

Why DC motors have open slots? slot wedges in dc machine Slot wedges in a DC machine made of silicon steel 2 In a DC machine armature is stationary, yoke rotates 2023 Basic Electrical Engineering Objective slot deposit via dana 5000 DC machine can act either as a generator or as a motor 12 DC slot and is secured in place by special hard wooden or fiber wedges

slot deposit via dana 5000 In the case of large machines slot wedges are additionally used to restrain Commutator Commutator is the key element which made the machine of the

slot 138 xxx Plain un-notched slots or slots without wedge portion are used only for low capacity machines DC machine armature, stator of alternator or induction motor  DC machines, slot wedges are generally made of silicon steel fibre impregnated paper cotton In which part of DC machine the eddy