3
Question
Lap winding is preferred for which type of machines?
Lap winding is preferred for which type of machines?
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Solution
The correct option is C High current and low voltage
Lap winding:
- Lap Winding is one type of winding with two layers, and it is used in electric machines.
- Every coil in the machine is allied in series with the one nearby coil to it.
- The applications of lap winding mainly include low voltage as well as high current machines.
Wave winding:
- It is an armature winding in which the coils are laid in two layers and follow each other on the surface of the armature.
- They are in the form of waves with the coils being so connected in series that there are only two paths for the flow of current whatever the number of poles in the machine.
Explanation for the correct option:
In case of option C
- Lap winding is used in machines that use high current and low voltage.
- Because lap winding can carry more current as it has more parallel paths.
- The number of parallel paths is exactly equal to the number of poles.
- Hence, lap winding is used in high current and low voltage machines.
Explanation for the incorrect option:
In case of option A.
- No case in electrical technology uses this type of configuration.
- Either we use high voltage machines, or we use high current machines.
- So this option is incorrect and given for distraction.
In case of option B.
- No case in electrical technology uses this type of configuration.
- For a given resistance, a high voltage can produce a high current.
- But it is not used in electrical machines.
- So this option is incorrect and given for distraction.
In case of option D.
- Wave winding is used in these types of machines.
- When the armature circuit is wave wounded the total number of parallel paths produced will be two.
- Unlike lap winding, the parallel path won’t change according to poles.
- Hence this option is incorrect.
Hence, lap winding is preferred in high current and low voltage machines.
Therefore, option C is correct.
High current and low voltage
Lap winding:
- Lap Winding is one type of winding with two layers, and it is used in electric machines.
- Every coil in the machine is allied in series with the one nearby coil to it.
- The applications of lap winding mainly include low voltage as well as high current machines.
Wave winding:
- It is an armature winding in which the coils are laid in two layers and follow each other on the surface of the armature.
- They are in the form of waves with the coils being so connected in series that there are only two paths for the flow of current whatever the number of poles in the machine.
Explanation for the correct option:
In case of option C
- Lap winding is used in machines that use high current and low voltage.
- Because lap winding can carry more current as it has more parallel paths.
- The number of parallel paths is exactly equal to the number of poles.
- Hence, lap winding is used in high current and low voltage machines.
Explanation for the incorrect option:
In case of option A.
- No case in electrical technology uses this type of configuration.
- Either we use high voltage machines, or we use high current machines.
- So this option is incorrect and given for distraction.
In case of option B.
- No case in electrical technology uses this type of configuration.
- For a given resistance, a high voltage can produce a high current.
- But it is not used in electrical machines.
- So this option is incorrect and given for distraction.
In case of option D.
- Wave winding is used in these types of machines.
- When the armature circuit is wave wounded the total number of parallel paths produced will be two.
- Unlike lap winding, the parallel path won’t change according to poles.
- Hence this option is incorrect.
Hence, lap winding is preferred in high current and low voltage machines.
Therefore, option C is correct.
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