SSE JE Electrical Engineering 10 Dec 2020 Papers

Question : 172 of 200

Marks: +1, -0

The distribution factor for a 36-slots, 4-pole, single layer, 3-phase winding machine is given as:

Solution:

3 – phase, 4 – pole synchronous machine.
No. of slots = 36 (stator slots)

m ={36}/{3 ×4}=3

\β={180°}/{{ \slots \per \pole }}

={180°}/{36\/ 4}=20°

\K _{ \d }={\sin {3 ×20}/{2}}/{3 \sin {20}/{2}}={\sin 30°}/{3 \sin 10°}

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