6. A d.c. shunt motor with interpoles has the following particulars : Output power ; 8,952 kW, 440-V, armature resistance 1.12, brush contact drop 2 V, interpole wind- ing resistance 0.4 22 shunt resistance 650 £2, resistance in the shunt regulator 50 2. Iron and friction losses on full-load 450 W. Calculate the efficiency when taking the full rated current of 24 A.

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Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.