Consider the following statements regarding the design of the distributed armature winding in a three-phase alternator: 1. It reduces the phase belt harmonics. 2. It increases utilization of armature iron and copper. 3. It increases rigidity and mechanical strength of the winding. 4. It reduces copper in the overhand of the winding. Which of the statements are correct?  a. 1,3 and 4 b. 2,3 and 4 c. 1,2 and 3 d. 1,2,3 and 4

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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.