Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > As the magnetic flux density increases, the r...
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As the magnetic flux density increases, the reluctance _____________
- a)Increases
- b)Decreases
- c)Remains the same
- d)Becomes zero
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
As the magnetic flux density increases, the reluctance _____________a)...
Reluctance is inversely proportional to the magnetic flux density, hence as magnetic flux density increases, reluctance decreases.
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As the magnetic flux density increases, the reluctance _____________a)...
Relationship between Magnetic Flux Density and Reluctance:
Reluctance is a measure of how difficult it is for magnetic flux to flow through a material. It is analogous to resistance in an electrical circuit. The formula for reluctance is given by: reluctance = magnetic reluctance = magnetic path length / (magnetic permeability * cross-sectional area).
As Magnetic Flux Density Increases:
- An increase in magnetic flux density implies that there is a greater concentration of magnetic field lines within a given area.
- This results in a higher magnetic field strength, which makes it easier for the magnetic flux to flow through the material.
- As a result, the reluctance of the material decreases because it becomes easier for the magnetic flux to pass through it.
Therefore, the correct answer is:
- b) Decreases
In summary, as the magnetic flux density increases, the reluctance of the material decreases. This relationship is important to understand in the design and analysis of magnetic circuits in electrical engineering.
Reluctance is a measure of how difficult it is for magnetic flux to flow through a material. It is analogous to resistance in an electrical circuit. The formula for reluctance is given by: reluctance = magnetic reluctance = magnetic path length / (magnetic permeability * cross-sectional area).
As Magnetic Flux Density Increases:
- An increase in magnetic flux density implies that there is a greater concentration of magnetic field lines within a given area.
- This results in a higher magnetic field strength, which makes it easier for the magnetic flux to flow through the material.
- As a result, the reluctance of the material decreases because it becomes easier for the magnetic flux to pass through it.
Therefore, the correct answer is:
- b) Decreases
In summary, as the magnetic flux density increases, the reluctance of the material decreases. This relationship is important to understand in the design and analysis of magnetic circuits in electrical engineering.
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As the magnetic flux density increases, the reluctance _____________a)Increasesb)Decreasesc)Remains the samed)Becomes zeroCorrect answer is option 'B'. Can you explain this answer?
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