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In lap winding, the number of brushes is always
- a)Double the number of pole
- b)Same as the number of poles
- c)Half the number of poles
- d)Triple the number of poles
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In lap winding, the number of brushes is alwaysa)Double the number of ...
In lap winding, the number of parallel paths = number of brushes = number of poles
In wave winding, the number of parallel paths = number of brushes = 2
Most Upvoted Answer
In lap winding, the number of brushes is alwaysa)Double the number of ...
Explanation:
Lap Winding:
- Lap winding is a type of armature winding in which the coil ends are connected to adjacent commutator segments.
- The number of parallel paths in lap winding is equal to the number of poles in the machine.
Number of Brushes:
- In lap winding, the number of brushes is always the same as the number of poles.
- Each brush makes contact with two commutator segments, so the number of brushes needed is equal to the number of poles.
Advantages of Lap Winding:
- Lap winding is more suited for machines with a large number of poles.
- It provides a higher current-carrying capacity compared to wave winding.
Disadvantages of Lap Winding:
- Lap winding requires more brushes compared to wave winding, which can increase the complexity and cost of the machine.
- Lap winding may have a higher reactance voltage drop compared to wave winding.
Conclusion:
In lap winding, the number of brushes is always the same as the number of poles in the machine. This is a fundamental characteristic of lap winding and is important to consider when designing or analyzing electrical machines using lap winding.
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