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A 4 pole lap wound DC generator has a developed power of P watts and a voltage of E volts. Two adjacent brushes of the machines are removed as they are worn out. If the machine operates with the remaining brushes, the developed voltage and the power obtained in the machines are

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  1. E,P

  2. E/2,P/2

  3. E,P/4

  4. E,P/2

Answer (Detailed Solution Below)

Option 3 :

E,P/4
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Detailed Solution

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The basic armature windings as a circuit configuration has been shown in the figure. From the figure we can say that  and power is the product of generated voltage and the current which will be P/4  as there is no change in E.

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More DC Generator Winding Questions

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Q1.If the number of parallel paths (A) in a DC generator is increased, the generated EMF will:
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