A 25 kVA, 220V, 3φ alternator delivers rated kVA at a power factor of 0.84. The effective ac resistance between armature winding terminals is 0.18Ω. The field takes 9.3A at 115V. If friction and windage loss is 460W and the core loss is 610W, calculate the percent efficiency.
A 25 kVA, 220V, 3φ alternator delivers rated kVA at a power factor of 0.84. The effective ac resistance between armature winding terminals is 0.18Ω. The field takes 9.3A at 115V. If friction and windage loss is 460W and the core loss is 610W, calculate the percent efficiency.
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 2.16P: A single-phase, 120V(rms),60Hz source supplies power to a series R-L circuit consisting of R=10 and...
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A 25 kVA, 220V, 3φ alternator delivers rated kVA at a power factor of 0.84. The effective ac resistance between armature winding terminals is 0.18Ω. The field takes 9.3A at 115V. If friction and windage loss is 460W and the core loss is 610W, calculate the percent efficiency.
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