A DC machine has 2 poles on the stator, the armature winding has 20 coils and 8 turns per coil. The armature radius r 12.5cm, armature length 1 25cm. The poles cover 80% of the armature while the average magnetic flux density per pole is 0.9T. Determine (a) what is total flux per pole (b) For lap-wound and wave-wound machines, what are the armature constants respectively

A DC machine has 2 poles on the stator, the armature winding has 20 coils and 8 turns per coil. The armature radius r 12.5cm, armature length 1 25cm. The poles cover 80% of the armature while the average magnetic flux density per pole is 0.9T. Determine (a) what is total flux per pole (b) For lap-wound and wave-wound machines, what are the armature constants respectively

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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SOLVE AND SHOW YOUR COMPLETE SOLUTION. ANSWERS SHOULD BE IN TWO DECIMAL PLACES. The armature of a two-pole dc machine has 30 slots, each slot has 4 conductors each. during its operation, only 75% of the conductors are directly under the pole. each pole measures 2 inches by 3 inches and produces ten million maxwells of flux. the armature core is 12 inches in length and 3.5 inches in diameter. the total resistance of the winding is 2 ohms. e) Determine the total torque exerted by the armature core in ft - lb if the winding is simplex lap winding.
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A 12 pole generator has a lap wound armature with 78 slots with 40 conductors per slot. Then the total number of armature conductors are ............... Answer
SOLVE AND SHOW YOUR COMPLETE SOLUTION. ANSWERS SHOULD BE IN TWO DECIMAL PLACES. The armature of a two-pole dc machine has 30 slots, each slot has 4 conductors each. during its operation, only 75% of the conductors are directly under the pole. each pole measures 2 inches by 3 inches and produces ten million maxwells of flux. the armature core is 12 inches in length and 3.5 inches in diameter. the total resistance of the winding is 2 ohms. b) determine the total generated voltage if the armature is running at 1000 rpm and its winding is simplex lap connected.
S. 13
When the DC machine is running under saturation condition, then flux per pole decreases due to armature reaction. Select one: O True O False
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Q2. A 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If the flux per pole is 20 mWb and the armature rotates at 720 rpm, what is the induced emf across the armature? (Ans. 276.48 V)
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