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Determine the air gap length of a dc machine from the following particulars: Gross length of core = 0.12 m, no. of ducts = 1 and 10 mm wide, slot pitch=25 mm, slot width= 10 mm, Carter's coefficient for slots and ducts = 0.32, gap density at pole centre= 0.7 wb/m², field mmf per pole = 3900 A, mmf required for iron parts of magnetic circuit = 800 A.

Determine the air gap length of a dc machine from the following particulars: Gross length of core = 0.12 m, no. of ducts = 1 and 10 mm wide, slot pitch=25 mm, slot width= 10 mm, Carter's coefficient for slots and ducts = 0.32, gap density at pole centre= 0.7 wb/m², field mmf per pole = 3900 A, mmf required for iron parts of magnetic circuit = 800 A.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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= Determine the air gap length of a dc machine from the following particulars: Gross length of core = 0.12 m, no. of ducts 1 and 10 mm wide, slot pitch=25 mm, slot width= 10 mm, Carter's coefficient for slots and ducts = 0.32, gap density at pole centre= 0.7 wb/m², field mmf per pole = 3900 A, mmf required for iron parts of magnetic circuit = 800 A.
Transcribed Image Text:= Determine the air gap length of a dc machine from the following particulars: Gross length of core = 0.12 m, no. of ducts 1 and 10 mm wide, slot pitch=25 mm, slot width= 10 mm, Carter's coefficient for slots and ducts = 0.32, gap density at pole centre= 0.7 wb/m², field mmf per pole = 3900 A, mmf required for iron parts of magnetic circuit = 800 A.
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