The armature of an 8 -pole dc machine has 72 slots, and its diameter is48 cm. Find the pole pitch in  and  meters,  and  mechanical degrees, and  mechanical radians,

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The armature of an 8 -pole dc
machine has 72 slots, and its
diameter is48 cm. Find the pole
pitch in  and  meters,  and  mechanical
degrees, and  mechanical radians, and 
electrical degrees, and  electrical
radians, and number of slots.
Also find and  the electrical angle
corresponding to a mechanical
angle of 350, and  the mechanical angle corresponding to an electrical angle of 350, and (i) the
distances along the armature surface corresponding to the angles in g and h .

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