Question
Download Solution PDFA four-pole DC machine armature has 54 slots. It is lap-wound with single turn coils. How many armature coils are required?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Here γB = Back Pitch
γF = Front Pitch
γC = Commutator pitch
In lap winding, the number of parallel paths is equal to the number of poles, i.e., A = P
In a simplex lap winding, a coil requires 2 commutator slots as it is clearly visible
∴ 54 commutator slots will have 27 armature coils in them.
Therefore, the correct option is (1)
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