A 100KVA, 220V, star connected alternator is loaded at full-load and at 60% pf lagging. The effective AC resistance per phase is 0.014110. If the synchronous reactance is 4.5 times the effect of the armature leakage reactance wherein the later is 0.046 N per phase, find (a) the phase voltage which would be generated at the load (b) What no-load open circuit phase voltage is required to circulate full-load current at short-circuit condition with no-change made at the speed and field current? (c) What is the alternators terminal phase voltage at shorted load condition? Explain and justify your answer in one(1) sentence. Use la as the reference phasor.

A 100KVA, 220V, star connected alternator is loaded at full-load and at 60% pf lagging. The effective AC resistance per phase is 0.014110. If the synchronous reactance is 4.5 times the effect of the armature leakage reactance wherein the later is 0.046 N per phase, find (a) the phase voltage which would be generated at the load (b) What no-load open circuit phase voltage is required to circulate full-load current at short-circuit condition with no-change made at the speed and field current? (c) What is the alternators terminal phase voltage at shorted load condition? Explain and justify your answer in one(1) sentence. Use la as the reference phasor.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.21P: An industrial plant consisting primarily of induction motor loads absorbs 500 kW at 0.6 power factor...

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