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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

Introductory Circuit Analysis (13th Edition)
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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the speed slightly or decrease 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 density. 260 mm 350 mm
Transcribed Image Text:the speed slightly or decrease 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 density. 260 mm 350 mm
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