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)
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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F787ca961-6e31-46af-ae11-7db35a1dea28%2F851ba884-3b1b-4906-ba95-24ffbf019d44%2Fq9docyd_processed.jpeg&w=3840&q=75)
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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