Q/4 A 3000 kVA, 3-phase, star-connected, 50 Hz, 2800 V alternator has resistance 0.120. A field current of 60 A produces a short circuit equal to full load current of 618 A in each line. The same field current produces an emf of 800 V on open circuit. Determine 1-The excitation voltage of the machine at 0.8 power factor lagging. 2-The full load regulation at 0.8 power factor lagging.

Q/4 A 3000 kVA, 3-phase, star-connected, 50 Hz, 2800 V alternator has resistance 0.120. A field current of 60 A produces a short circuit equal to full load current of 618 A in each line. The same field current produces an emf of 800 V on open circuit. Determine 1-The excitation voltage of the machine at 0.8 power factor lagging. 2-The full load regulation at 0.8 power factor lagging.

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter19: Special-purpose Outlets-water Pump, Water Heater

Section19.1: Water Pump And Branch Circuit

Problem 21R: Fill in the data for a 16-ampere electric motor, single-phase, no Code letters. a. Branch-circuit...

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