Q3. a) Ferromagnetic materials are used widely in the construction of electrical machines, such as transformers, motors and generators. (i) Compare the properties of hard and soft ferromagnetic materials and sketch typical BH curves for each. (ii) When constructing magnetic circuits, why is a high permeability desirable? (iii) For a permanent magnet motor, why is a high coercivity important?
Q3. a) Ferromagnetic materials are used widely in the construction of electrical machines, such as transformers, motors and generators. (i) Compare the properties of hard and soft ferromagnetic materials and sketch typical BH curves for each. (ii) When constructing magnetic circuits, why is a high permeability desirable? (iii) For a permanent magnet motor, why is a high coercivity important?
Related questions
Question
Transcribed Image Text:Q3. a) Ferromagnetic materials are used widely in the construction of electrical
machines, such as transformers, motors and generators.
(i)
Compare the properties of hard and soft ferromagnetic materials and sketch
typical BH curves for each.
(ii)
When constructing magnetic circuits, why is a high permeability desirable?
(iii)
For a permanent magnet motor, why is a high coercivity important?
(iv) Why is a large hysteresis loop undesirable when building a high frequency
AC transformer?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
