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If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, then
- a)Wave-wound machine will have more rated current and more voltage
- b)Lap-wound machine will have more rated voltage and more current
- c)Lap-wound machine will have more rated voltage and less current
- d)Wave-wound machine will have more rated voltage and less current
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
If two 8-pole dc machines of identical armature are wound, one with la...
For wave wound, number of parallel paths (A) = 2
For lap wound, number of parallel paths (A) = P = 8
Hence the current rating is less in wave wound
We know that, 
Hence the voltage rating is more in wave wound
Most Upvoted Answer
If two 8-pole dc machines of identical armature are wound, one with la...
Introduction:
When comparing a lap winding and a wave winding for 8-pole DC machines with identical armature, there are certain characteristics that differ between the two windings. These characteristics include the rated current and rated voltage of the machines. In this case, the correct answer is option 'D', which states that the wave-wound machine will have more rated voltage and less current.
Explanation:
To understand why the wave-wound machine has more rated voltage and less current compared to the lap-wound machine, let's discuss the characteristics of each winding type.
Lap Winding:
A lap winding is a type of DC machine winding where the armature conductors are divided into two parallel paths. The conductors in each path are connected in series with each other and form a closed loop. The number of parallel paths in a lap winding is equal to the number of poles in the machine.
Wave Winding:
A wave winding is another type of DC machine winding where the armature conductors are connected in a series, but not in parallel paths like in a lap winding. Instead, the conductors are connected in a wave-like pattern, hence the name "wave winding." The number of parallel paths in a wave winding is always equal to two.
Rated Voltage:
The rated voltage of a machine is determined by the voltage across each armature conductor. In a lap winding, since the number of parallel paths is equal to the number of poles, the voltage across each conductor is lower compared to a wave winding. In a wave winding, with only two parallel paths, the voltage across each conductor is higher. Therefore, the wave-wound machine will have a higher rated voltage.
Rated Current:
The rated current of a machine is determined by the current flowing through each armature conductor. In both lap and wave windings, the total current is equal to the rated current. However, in a wave winding, since there are only two parallel paths, the current through each conductor is higher compared to a lap winding with multiple parallel paths. Therefore, the lap-wound machine will have a higher rated current.
Conclusion:
In summary, the wave-wound machine will have a higher rated voltage and a lower rated current compared to the lap-wound machine. This is because the wave winding has fewer parallel paths, resulting in a higher voltage across each conductor and a higher current through each conductor.
When comparing a lap winding and a wave winding for 8-pole DC machines with identical armature, there are certain characteristics that differ between the two windings. These characteristics include the rated current and rated voltage of the machines. In this case, the correct answer is option 'D', which states that the wave-wound machine will have more rated voltage and less current.
Explanation:
To understand why the wave-wound machine has more rated voltage and less current compared to the lap-wound machine, let's discuss the characteristics of each winding type.
Lap Winding:
A lap winding is a type of DC machine winding where the armature conductors are divided into two parallel paths. The conductors in each path are connected in series with each other and form a closed loop. The number of parallel paths in a lap winding is equal to the number of poles in the machine.
Wave Winding:
A wave winding is another type of DC machine winding where the armature conductors are connected in a series, but not in parallel paths like in a lap winding. Instead, the conductors are connected in a wave-like pattern, hence the name "wave winding." The number of parallel paths in a wave winding is always equal to two.
Rated Voltage:
The rated voltage of a machine is determined by the voltage across each armature conductor. In a lap winding, since the number of parallel paths is equal to the number of poles, the voltage across each conductor is lower compared to a wave winding. In a wave winding, with only two parallel paths, the voltage across each conductor is higher. Therefore, the wave-wound machine will have a higher rated voltage.
Rated Current:
The rated current of a machine is determined by the current flowing through each armature conductor. In both lap and wave windings, the total current is equal to the rated current. However, in a wave winding, since there are only two parallel paths, the current through each conductor is higher compared to a lap winding with multiple parallel paths. Therefore, the lap-wound machine will have a higher rated current.
Conclusion:
In summary, the wave-wound machine will have a higher rated voltage and a lower rated current compared to the lap-wound machine. This is because the wave winding has fewer parallel paths, resulting in a higher voltage across each conductor and a higher current through each conductor.
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If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer?
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If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer?.
If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If two 8-pole dc machines of identical armature are wound, one with lap winding and the other with wave winding, thena)Wave-wound machine will have more rated current and more voltageb)Lap-wound machine will have more rated voltage and more currentc)Lap-wound machine will have more rated voltage and less currentd)Wave-wound machine will have more rated voltage and less currentCorrect answer is option 'D'. Can you explain this answer?.
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