| 1. | The unit of flux is the same as that of ? | |
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reluctance
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resistance
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permeance
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pole strength
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Report Question| 2. | The uniform magnetic field is ? | |
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the field of a set of parallel conductors
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the field of a single conductor
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the field in which all lines of magnetic flux are parallel and equidistant
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none of the above
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| 3. | A keeper is used to ? | |
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change the direction of magnetic lines
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amplify flux
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restore lost flux
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provide a closed path for flux
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| 4. | When a magnet is in motion relative to a coil the induced e.m.f. does not depend upon ? | |
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resistance of the coil
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motion of the magnet
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number of turns of the coil
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pole strength of the magnet
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| 5. | Which of the following is not a unit of flux ? | |
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Maxwell
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Tesla
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Weber
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All of the above
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| 6. | The magnetisation and applied field in ferromagnetic materials are related ? | |
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sinusoidally
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linearly
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non-linearly
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parabolically
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| 7. | Which of the following statements is correct ? | |
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The magnetic flux inside an exciting coil is lower than its outside surface
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The magnetic flux inside an exciting coil is zero
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The magnetic flux inside the exciting coil is greater than its outside surface
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The magnetic flux inside the exciting coil is same as on its outside surface
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| 8. | For which of the following materials the net magnetic moment should be zero ? | |
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Diamagnetic materials
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Ferrimagnetic materials
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Antiferromagnetic materials
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Antiferrimagnetic materials
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| 9. | Susceptibility is positive for ? | |
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non-magnetic substances
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diamagnetic substances
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ferromagnetic substances
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none of the above
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| 10. | The use of permanent magnets is not made in ? | |
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magnates
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energy meters
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transformers
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loud-speakers
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