Find the total external armature current of a dc machine which has the following specifications: 120 armature slots; 6 conductor per slot; 9300 lines per cm2 flux density; armature diameter of 28 inch ; 14 inch armature axial length ; 4 armature parallel path ; the pole span 72 % of the armature surface and the torque developed by the armature 1500 lb-ft.

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Find the total external armature current of a dc machine which has the
following specifications: 120 armature slots; 6 conductor per slot; 9300
lines per cm2 flux density; armature diameter of 28 inch ; 14 inch
armature axial length ; 4 armature parallel path ; the pole span 72 % of
the armature surface and the torque developed by the armature 1500 lb-ft. (ANS: 133.6 A)

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