The OC curve of a d.c. shunt generator for a speed of 1000 r.p.m. is given by the following table. Field current: 2.0 3.0 4.0 5.0 6.0 7.0 E.M.F. volts: 102 150 188 215 232 245 The shunt has a resistance of 37 2. Find the speed at which excitation may be expected to build up. The aramture resistance of 0.04 12. Neglecting the effects of brush drop and armature reaction, estimate the p.d. when the speed is 1000 r.p.m. and the armature delivers a current of 100 A.

The OC curve of a d.c. shunt generator for a speed of 1000 r.p.m. is given by the following table. Field current: 2.0 3.0 4.0 5.0 6.0 7.0 E.M.F. volts: 102 150 188 215 232 245 The shunt has a resistance of 37 2. Find the speed at which excitation may be expected to build up. The aramture resistance of 0.04 12. Neglecting the effects of brush drop and armature reaction, estimate the p.d. when the speed is 1000 r.p.m. and the armature delivers a current of 100 A.

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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