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Sketch the load characteristic of a d.c. generator with() shunt (i) series excitation. Give reasons for the particular shape in each case. The open-circuit characteristic at 700 r.p.m.

Sketch the load characteristic of a d.c. generator with() shunt (i) series excitation. Give reasons for the particular shape in each case. The open-circuit characteristic at 700 r.p.m.

Power System Analysis and Design (MindTap Course List)
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 3.28MCQ
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2. Sketch the load characteristic of a d.c. generator with() shunt (ii) series excitation. Give reasons for the particular shape in each case. The open-circuit characteristic at 700 r.p.m. of a series generator with separately-excited field is as follows: Field current (A): EME (V) 0 10 0.5 60 1 2 120 199 3 232 248 3 258 Determine the current and terminal voltage as a self-excited series machine when running at 600 r.p.m. with a load of 60 connected to the terminal. Resistance of armature and series winding is 0.30. Ignore the effect of armature reaction.
Transcribed Image Text:2. Sketch the load characteristic of a d.c. generator with() shunt (ii) series excitation. Give reasons for the particular shape in each case. The open-circuit characteristic at 700 r.p.m. of a series generator with separately-excited field is as follows: Field current (A): EME (V) 0 10 0.5 60 1 2 120 199 3 232 248 3 258 Determine the current and terminal voltage as a self-excited series machine when running at 600 r.p.m. with a load of 60 connected to the terminal. Resistance of armature and series winding is 0.30. Ignore the effect of armature reaction.
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