iA 4-pole, DC machine has 144 slot in the armature with 2 coil- sides per slot, each coil has 2 turns. The flux per pole is 20 mwb, the armature is lap wound and the machine rotates at 720 rpm. What is the induced emf (i) across the armature (ii) across each parallel path.

iA 4-pole, DC machine has 144 slot in the armature with 2 coil- sides per slot, each coil has 2 turns. The flux per pole is 20 mwb, the armature is lap wound and the machine rotates at 720 rpm. What is the induced emf (i) across the armature (ii) across each parallel path.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

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Concept explainers

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.

Question

iA 4-pole, DC machine has 144
slot in the armature with 2 coil-
sides per slot, each coil has 2
turns. The flux per pole is 20 mwb,
the armature is lap wound and the
machine rotates at 720 rpm. What
is the induced emf (i) across the
armature (ii) across each parallel
path.

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