EXAMIANS
The unit of retentivity is
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Energy stored by a coil is doubled when its current is increased by percent.
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The unit of magnetic flux is
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An air gap is usually inserted in magnetic circuits to
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Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity.
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A material for good magnetic memory should have
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Conductance is analogous to
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The initial rate of rise of current through a coil of inductance 10 H when suddenly connected to a D.C. supply of 200 V is ___________Vs
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Those magnetic materials are best suited for making armature and transformer cores which have ________permeability and _________hysteresis loss.
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Silicon steel is used in electrical machines because it has
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