8262.5 ▸ A balanced star connected load is connected to a 4 kVA, 415 V, star connected three phase generator via a three wire transmission line. The impedance of each line is 0.3 + j6.0 ohms. The synchronous impedance of the generator is 0.4 + j2.4 ohms. The fixed losses of the generator are 175 W. The field winding is connected to a 120 V source and the field current is 5.5 A. When the generator delivers rated load at rated voltage and at 0.866 power factor lagging, find ▸ The efficiency of the generator (79.8%) The voltage regulation at the load (11.2%) ▸ The efficiency of the entire system. (79.2%) Ts = 8262.5w (401) =65.74 N.m ▸ Draw the power flow diagram of the entire power system indicating on the diagram all the values of the power flows.

8262.5 ▸ A balanced star connected load is connected to a 4 kVA, 415 V, star connected three phase generator via a three wire transmission line. The impedance of each line is 0.3 + j6.0 ohms. The synchronous impedance of the generator is 0.4 + j2.4 ohms. The fixed losses of the generator are 175 W. The field winding is connected to a 120 V source and the field current is 5.5 A. When the generator delivers rated load at rated voltage and at 0.866 power factor lagging, find ▸ The efficiency of the generator (79.8%) The voltage regulation at the load (11.2%) ▸ The efficiency of the entire system. (79.2%) Ts = 8262.5w (401) =65.74 N.m ▸ Draw the power flow diagram of the entire power system indicating on the diagram all the values of the power flows.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.23MCQ: Does an open- operation, the kVA rating compared to that of the original thr-phase bank is (a) 2/3...

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