Discussion :: Materials and Components
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For a permanent magnetic material
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A.
the residual induction and coercive field should be large
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B.
the residual induction and coercive field should be small
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C.
area of hysteresis loop should be small
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D.
initial relative permeability should be high
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Answer : Option A
Explanation :
Materials suitable for permanent magnet have large hysteresis loop.
Hence residual and coercive field are large.
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