What are the different losses in a d.c.
machine? Which of them are variable
losses? Derive the condition for
maximum efficiency of a d.c. machine.
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Explanation:
The losses that occur in a DC Machine is divided into five basic categories. The various losses are Electrical or Copper losses (I2R losses), Core losses or Iron losses, Brush losses, Mechanical losses, Stray load losses. These losses are explained below in detail.
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