3. The resistance of the field coils with copper conductors of a dynamo is 120 ohms at 25 "C. After working for 6 hours on full load, the resistance of the coil increases to 140 ohms. Calculale the mean temperature rise of the field coil. Take the tomperature coefficient of the conductor naterial as 0.0042 at 0 C.

3. The resistance of the field coils with copper conductors of a dynamo is 120 ohms at 25 "C. After working for 6 hours on full load, the resistance of the coil increases to 140 ohms. Calculale the mean temperature rise of the field coil. Take the tomperature coefficient of the conductor naterial as 0.0042 at 0 C.

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

Chapter4: Transmission Line Parameters

Section: Chapter Questions

Problem 4.1P: The Aluminum Electrical Conductor Handbook lists a dc resistance of 0.01558 ohm per 1000 ft at 20C...

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