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Speed Control of DC motor by varying armature and field resistance
Objective
  1. To study the waveform showing the variation of speed with change of armature voltage.
  2. To study the waveform showing the variation of speed with change of field current.
  3. To study how the speed control above rated speed can be achieved with field current.
  4. To study how the speed control below rated speed can be achieved with armature voltage.