H.W The table gives data for open-circuit and load zero powver factor tests on a 6-pole, 440 V, 50 Hz, 3-phase star-connected alternator. The effective ohmic resisțance between any two terminals of the armature is 0.3 2 4 6. 7 8 10 12 14 16 "18 Field current (A) O.C.terminal 156 288 396 440 474 530 568 592 voltage (V) 22 34 40 46 57 69 80 S.C.line current (A) 11 Zero n f 2.

H.W The table gives data for open-circuit and load zero powver factor tests on a 6-pole, 440 V, 50 Hz, 3-phase star-connected alternator. The effective ohmic resisțance between any two terminals of the armature is 0.3 2 4 6. 7 8 10 12 14 16 "18 Field current (A) O.C.terminal 156 288 396 440 474 530 568 592 voltage (V) 22 34 40 46 57 69 80 S.C.line current (A) 11 Zero n f 2.

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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Generate a conclusion on this following statements: Determine and analyze the voltage regulation characteristics of the alternator with resistive, capacitive, and inductive loading.
A three-phase 3300V. 50 Hz star-connected alternator has an effective resistance of 0.5 ohm/phase. A field current to of 30A produces full-load current of 180A on short- circit and a line to line emf of 1000V on open circit Determine(i) the power angle of the alternator when it delivers full-load at 0.8p.f(lag) (ii)the SCR of the alternator D
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A 25cps single-phase, 8-pole, alternator with 725 mWb flux per pole has 288 slots. The machine coil has 2 turns per coil. In the winding of the armature, the ratio between the chording angle to the fractional pitch is 1/8. Find the voltage between two terminals.
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1.) A 6-pole, 3-phase, 60-Hz alternator has 12 slots per pole and four conductors per slot. The winding is 5/6 pitch. There are 0.025 Wb entering the armature from each north pole, and this flux is sinusoidally distributed along the air gap. The armature coils are all connected in series. The winding is wye-connected. Determine the open circuit emf per phase of the alternator. Subject Electrical machine 2
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