An automotive alternator is rated 500 VA and20 V. It delivers its rated voltamperes at a powerfactor of 0.85. The resistance per phase is 0.05Ω , andthe field takes 2 A at 12 V. If the friction and windageloss is 25 W and the core loss is 30 W, calculate thepercent efficiency under rated conditions.

An automotive alternator is rated 500 VA and20 V. It delivers its rated voltamperes at a powerfactor of 0.85. The resistance per phase is 0.05Ω , andthe field takes 2 A at 12 V. If the friction and windageloss is 25 W and the core loss is 30 W, calculate thepercent efficiency under rated conditions.

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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