Q3. a) Ferromagnetic materials are used widely in the construction of electricalmachines, such as transformers, motors and generators.(i)Compare the properties of hard and soft ferromagnetic materials and sketchtypical 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 frequencyAC transformer?

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Answered: Q3. a) Ferromagnetic materials are used…

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