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Calculate Gap contraction factor for the duct (Kgd₎ from the following data:
no. of pole = 4
slot pitch = 43 mm
slot opening = 21 mm
gross length of core = 480 mm
pole arc = 180 mm
length of airgap = 6 mm
flux per pole = 0.056 Wb
no. of ventilation ducts = 8
width of each ventilating duct = 12 mm
carter's coefficient for slot = 0.42
carter's coefficient for ducts = 0.28
258
059
648
4145
059
Quick Summary: Practice and solve "Calculate Gap contraction factor for the duct (Kgd) from the following data: no. of pole = 4 slot pi..." for Electrical - Electrical Materials. The correct answer is Option B: 059. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Answer:
Option **(b) **