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Magnetic Circuit

Magnetic Circuit
The unit of reluctance is

Meter/Henry
Henry
1/Henry
Henry/meter

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Magnetic Circuit
Those magnetic materials are best suited for making armature and transformer cores which have ________permeability and _________hysteresis loss.

High, low
High, high
Low, low
Low, high

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Magnetic Circuit
Silicon steel is used in electrical machines because it has

Low hysteresis loss
High coercivity
Low coercivity
Low retentivity

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Magnetic Circuit
Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity.

High, low
Low, high
High, high
Low, low

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Magnetic Circuit
Ferrites have high hysteresis

None of the listed here
Ferrites have high resistance
Ferrites have low permeability
Ferrites have high resistance

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Magnetic Circuit
Hysteresis loss least depends on

Steinmetz’s coefficient of material
Frequency
Ambient temperature
Volume of material

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