1. A 3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is 1-502/phase and synchronous reactance is 30 2/phase. To what value will the terminal voltage rise when full-lead at p.f. 0-8 lagging is switched off ? [13970 V]

1. A 3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is 1-502/phase and synchronous reactance is 30 2/phase. To what value will the terminal voltage rise when full-lead at p.f. 0-8 lagging is switched off ? [13970 V]

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter31: Three-phase Alternators

Section: Chapter Questions

Problem 1RQ: What conditions must be met before two alternators can be paralleled together?

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1. A 3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is 1-5 02/phase
and synchronous reactance is 30 2/phase. To what value will the terminal voltage rise when full-load at
p.f. 0-8 lagging is switched off?
[13970 V

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