The synchronous motor of Problem 5.7 is supplied from a 575-V source through a feeder with a reactive impedance of Xf = 0.95 2. The motor is operating at rated speed and source voltage and at an output power of 40 kW. Ignoring losses in the motor, calculate the magnitude and phase angle of the line-to-neutral generated voltage af, the field current If and the line-to-line motor terminal voltage V₁ if the motor is operating at (a) 0.9 power factor lagging, (b) unity power factor, and (c) 0.9 power factor leading as measured at the 575-V source.

The synchronous motor of Problem 5.7 is supplied from a 575-V source through a feeder with a reactive impedance of Xf = 0.95 2. The motor is operating at rated speed and source voltage and at an output power of 40 kW. Ignoring losses in the motor, calculate the magnitude and phase angle of the line-to-neutral generated voltage af, the field current If and the line-to-line motor terminal voltage V₁ if the motor is operating at (a) 0.9 power factor lagging, (b) unity power factor, and (c) 0.9 power factor leading as measured at the 575-V source.

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

Chapter5: Transmission Lines: Steady-state Operation

Section: Chapter Questions

Problem 5.43P

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