While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit?
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Electrical Engineering · all questionsMagnetic Circuit
Magnetic Circuit
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Point out the wrong statement. Magnetic leakage is undesirable in electric machines because it
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The unit of magnetic flux is
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Laminated cores, in electrical machines, are used to reduce
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Those materials are well suited for making permanent magnets which have ________ retentivity and ________ coercivity.
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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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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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Relative permeability of vacuum is
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In a magnetic material hysteresis loss takes place primarily due to
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Permeability in a magnetic circuit corresponds to_________ in an electric circuit.
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A ferrite core has less eddy current loss than an iron core because
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Conductance is analogous to
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Permanent magnets are normally made of
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A material for good magnetic memory should have
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Reciprocal of reluctance is
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When both the inductance and resistance of a coil are doubled the value of
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Silicon steel is used in electrical machines because it has
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If the area of hysteresis loop of a material is large, the hysteresis loss in this material will be
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The unit of retentivity is
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An air gap is usually inserted in magnetic circuits to
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