A three-phase alternator of 4 poles and 60 HZ, connected in star of 100 KVA and 1100 volts is tested for OCC, SCC and winding resistance, giving the following data:Based on the above data, obtain: a) - The equivalent circuit per phase of the alternator b) - Operating speed c) - If it is synchronized with a power system whose frequency is 60 Hz and the alternator has a Sp=5 kW/Hz and its speed at the moment of synchronization is 1860 rpm, what power will it deliver? d) - What will be your internal voltage generated if you feed a load with forward PF of 0.9 and you are at 80% of your load? e) - For the case of item d), what is the reactive power delivered or consumed? TESTОССSCCRESISTANCEDEWINDINGSV420 VAC6 VDC52.48 AAC10 ADC12.5 ADC12.5 ADC

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Answered: A three-phase alternator of 4 poles and…

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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A three-phase alternator of 4 poles and 60 HZ, connected in star of 100 KVA and 1100 volts is tested for OCC, SCC and winding resistance, giving the following data:

Based on the above data, obtain:

a) - The equivalent circuit per phase of the alternator
b) - Operating speed
c) - If it is synchronized with a power system whose frequency is 60 Hz and the alternator has a Sp=5 kW/Hz and its speed at the moment of synchronization is 1860 rpm, what power will it deliver?
d) - What will be your internal voltage generated if you feed a load with forward PF of 0.9 and you are at 80% of your load?
e) - For the case of item d), what is the reactive power delivered or consumed?

TEST
ОСС
SCC
RESISTANCE
DE
WINDINGS
V
420 VAC
6 VDC
52.48 AAC
10 ADC
12.5 ADC
12.5 ADC

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