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Two similar 6,600-V, three phase generators are running in parallel on constant-voltage and frequency bus bars. Each has an equivalent resistance and reactance of 0.05 Ω and 0.5 Ω respectively and supplies one half of a total load of 10,000 kW at a lagging p.f. of 0.8, the two machines being similarly excited. If the excitation of one machine be adjusted until the armature current is 438 A and the steam supply to the turbine remains unchanged, find the armature current, the e.m.f. and the p.f. of the other alternator.

Two similar 6,600-V, three phase generators are running in parallel on constant-voltage and frequency bus bars. Each has an equivalent resistance and reactance of 0.05 Ω and 0.5 Ω respectively and supplies one half of a total load of 10,000 kW at a lagging p.f. of 0.8, the two machines being similarly excited. If the excitation of one machine be adjusted until the armature current is 438 A and the steam supply to the turbine remains unchanged, find the armature current, the e.m.f. and the p.f. of the other alternator.

Introductory Circuit Analysis (13th Edition)
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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Two similar 6,600-V, three phase generators are running in parallel on constant-voltage and
frequency bus bars. Each has an equivalent resistance and reactance of 0.05 Ω and
0.5 Ω respectively and supplies one half of a total load of 10,000 kW at a lagging
p.f. of 0.8, the two machines being similarly excited. If the excitation of one
machine be adjusted until the armature current is 438 A and the steam supply to the
turbine remains unchanged, find the armature current, the e.m.f. and the p.f. of the
other alternator.

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