ase the speed slightly or decre shunt-field-circuit resistance slightly. Example 8.21(a). A 6-pole dc generator runs at 1200 r.p.m. on no-load and has a generated e.m.f of250 V. Its arma- ture diameter is 350 mm and the radial air-gap between the field poles and the armature is 3 mm. The axial length of the field poles is 260 mm and the field pole effective coverage is 80% including fringing. If the armature has 96 coils having 3 turns per coil and is wound duplex lap, calculate (a) flux per pole (b) effective pole arc length and (c) average air-gap flux 260 mm 350 mm

ase the speed slightly or decre shunt-field-circuit resistance slightly. Example 8.21(a). A 6-pole dc generator runs at 1200 r.p.m. on no-load and has a generated e.m.f of250 V. Its arma- ture diameter is 350 mm and the radial air-gap between the field poles and the armature is 3 mm. The axial length of the field poles is 260 mm and the field pole effective coverage is 80% including fringing. If the armature has 96 coils having 3 turns per coil and is wound duplex lap, calculate (a) flux per pole (b) effective pole arc length and (c) average air-gap flux 260 mm 350 mm

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter6: Power Flows

Section: Chapter Questions

Problem 6.45P

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