11. The armature of a 100-kw 250-volt shunt-wound generator has a resistance of 0.02 ohm. When the generator is operated as a motor, what input voltage should be applied across the brushes to measure the no-load losses if the brush-contact IR drop is 2 volts? A. 240 volts B. 248 volts C. 260 volts D. 252 volts
11. The armature of a 100-kw 250-volt shunt-wound generator has a resistance of 0.02 ohm. When the generator is operated as a motor, what input voltage should be applied across the brushes to measure the no-load losses if the brush-contact IR drop is 2 volts? A. 240 volts B. 248 volts C. 260 volts D. 252 volts
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Question
#11
Transcribed Image Text:10. Excitation losses in a transformer must be determined. When running the test, you should make sure
that the secondary winding
A. carries exactly the rated current.
B. is open-circuited.
C. is short-circuited
D. carries a higher current than the primary.
11. The armature of a 100-kw 250-volt shunt-wound generator has a resistance of 0.02 ohm. When the
generator is operated as a motor, what input voltage should be applied across the brushes to measure the
no-load losses if the brush-contact IR drop is 2 volts?
A. 240 volts
B. 248 volts
C. 260 volts
D. 252 volts
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