The 648 conductors of the armature winding of a generator are connected in ten parallel paths at 6 conductors perslot. Each conductor carries 83.33 amperes when the generator is delivering 500,000 watts. If the flux per pole is7.72 106 maxwells and the speed of rotation of the armature is 720 rpm,(a) determine the generated voltage;(b) how many field poles are there?;(c) show by computation that there are 108 slots on the armature core.

Answered: Image /qna-images/answer/8f60d72b-809f-4baa-b6f0-2aa4e6c1537a.jpg

Answered: 48 conductors of the armature winding…

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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Q 4. An 8-pole DC generator has 400 armature conductors and a useful flux of 0.05 Wb. What will be the emf generated if it is lap wound and runs at 1,500 rpm? What must be the speed at which it is to be driven to induce the same voltage if it is wave wound? (Ans. 500 V; 375 rpm) 05 A vave wound armature generator has 51 slots Fach slot contains 20 conductors The
Calculate the armature conductors of a d.c generator, if the emf induced is 220 V, armature has 10 poles, flux per pole is 10 mwb and it is rotating at a speed of 1000 rpm.Assume the armature is lap connected. O a. 1320 O b. 264 O C. 7.57x10-4 O d. 3.78x10-3
Q1/ A 4-pole, lup wownd de generator has a useful Flux of o.07 Wb per pole. Caleulate the generated EMF when It rotated at a speed of goo rpm, with the help of prime mover. Conductors. Also calaulate the generated EMF if lap Wound armatureu is repaced by wave wound armature, Armature Consists of' uu0 number of
EXAMPLES 1. Sketch neat graphs to show the internal or open-circuit characteristics of a separately-excited d.c. generator. Why is a field regulator necessary with such a machine? A four-pole d.c. generator gives 410 V on open circuit when driven at 900 rev/min. Calculate the flux per pole if the wave-connected armature winding has 39 slots with 16 conductors per slot. 10219 wb (U.E.I.) 2. A six-pole d.c. generator having a lap-connected armature winding is required to give a terminal voltage of 240 V when supplying an arma- ture current of 400 A. The armature has 84 slots and is driven at 700 rev/min. The resistance of the armature circuit is 0-03 2 and the useful flux per pole is about 0-03 Wb. Calculate the number of conductors per slot and the actual value of the useful flux per pole. 8- 0.0321 wb 3. Explain why the terminal voltage of a d.c. shunt-excited generator falls as the current supplied by the machine is increased. The resistance of the field circuit of a shunt-excited…
A 4-pole alternator runs at 1,200 RPM. There are 10,000 kilolines per pole. (a) Determine the effective voltage built up for each full pitch armature coil of one turn if the flux distribution in the air gap is sinusoidal. (b) Suppose that the armature coil is short 30 electrical degrees of being full pitch, what will be the effective voltage per coil? (a) What is the pitch factor for this winding? Ans. 17.76V; 17.15V; 0.966
A 6 pole DC wave wound generator has 41 armature conductors with Flux per pole is 26 mWb and the e.m.f generated is 79 V, then the speed of machine is ?
How do I compute voltage at the high voltage terminal of the transformer
A 4-pole DC generator has 800 armature conductors and a flux per pole of 10 mWb running at 600 rpm. Calculate the EMF generated when the armature is connected as a simplex lap winding.
The armature of a two-pole generator is rotating at 3600 r/min. The armature has a simplex lap winding with a total of 1504 conductors. Determine the generated voltage when the flux per pole is 600,000 x 10-8 Wb. 5.5
The armature of a d.c. generator consists of 40 coils and each coil has 20 turns. When the armature is rotated at 200 rad/s in a 4-pole field structure having a flux of 5 mWb/pole and there are four paths in the armature, calculate (i) number of armature conductors (ii) the voltage between brushes generated by the armature.

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