A 690 KVA, 4200-V, 60 Hz, 0.9 PF lagging, Delta-connected, 8- pole synchronous generator has an armature resistance of 0 Q. The OC and SCC characteristics are given below in a tabular form. Find the generator's synchronous reactance at rated armature current. IF (A) 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0 VT (V) 400 1200 1850 2450 2950 3500 3800 4200 4400 4550 4650 4750 4820 lA (A) 20 45 70 95 125 150 175 200 230 255 280 310 340 Select one: O a. Xs = j25.8 Ohms O b. X = 8.6 Ohms O c. X, = 14.9 Ohms O d. None e. Xg = 25.8 Ohms Clear my choice

A 690 KVA, 4200-V, 60 Hz, 0.9 PF lagging, Delta-connected, 8- pole synchronous generator has an armature resistance of 0 Q. The OC and SCC characteristics are given below in a tabular form. Find the generator's synchronous reactance at rated armature current. IF (A) 0.25 0.5 0.75 1.0 1.25 1.5 1.75 2.0 2.25 2.5 2.75 3.0 VT (V) 400 1200 1850 2450 2950 3500 3800 4200 4400 4550 4650 4750 4820 lA (A) 20 45 70 95 125 150 175 200 230 255 280 310 340 Select one: O a. Xs = j25.8 Ohms O b. X = 8.6 Ohms O c. X, = 14.9 Ohms O d. None e. Xg = 25.8 Ohms Clear my choice

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

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.3P

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