Example 1.4: Determine the air gap length of a de machine from the followingdata :Gross core length = 0.10 mNo. of ducts = 1Width of duct = 10 mmSlot pitch, y, = 24 mmSlot width, W, = 12 mmCarter's co-efficient for slots and ducts = 0.3Gap flux density at pole centre = 0.65Field mmf per pole = 3800 AMMF required for iron parts of magnetic circuit = 600 A

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Example 1.4: Determine the air gap length of a de machine from the following data : Gross core length 0.10 m No. of ducts = 1 Width of duct = 10 mm Slot pitch, ys = 24 mm Slot width, W, = 12 mm S Carter's co-efficient for slots and ducts = 0.3 Gap flux density at pole centre = 0.65 Field mmf per pole = 3800 A MMF required for iron parts of magnetic circuit = 600 A

Example 1.4: Determine the air gap length of a de machine from the following data : Gross core length 0.10 m No. of ducts = 1 Width of duct = 10 mm Slot pitch, ys = 24 mm Slot width, W, = 12 mm S Carter's co-efficient for slots and ducts = 0.3 Gap flux density at pole centre = 0.65 Field mmf per pole = 3800 A MMF required for iron parts of magnetic circuit = 600 A

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Find the ratio of exciting currents with and without a 1mm air gap in a magnetic core of mean length 50cms and relativepermeability of 2500 and cross-section of 1cm 2 in a 1000 turn coil wound on the core. The flux density in both cases must be1T.
Magnetic saturation is that condition of a magnetic material when all of the magnetic domains are oriented in the direction of the applied mmf True False