A. from south pole to north pole
B. from north pole to south pole
C. from one end of the magnet to another
D. none of the above
0
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A permeable substance is one_____________?
0
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A magnetic field exists around____________?
A. which is a good conductor
B. which is a bad conductor
C. which is a strong magnet
D. through which the magnetic lines of force can pass very easily
0
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The materials having low retentivity are suitable for making_____________?
A. iron
B. copper
C. aluminium
D. moving charges
0
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Tesla is a unit of_____________?
A. weak magnets
B. temporary magnets
C. permanent magnets
D. none of the above
0
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Ferrites are materials
A. field strength
B. inductance
C. flux density
D. flux
0
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The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is________________?
A. paramagnetic
B. diamagnetic
C. ferromagnetic
D. none of the above
0
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Air gap has_________eluctance as compared to iron or steel path?
A. proportional to 7
B. proportional to X
C. proportional to distance between the conductors
D. inversely proportional to I
0
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Which of the following is a vector quantity ?
A. little
B. lower
C. higher
D. zero
0
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A material which is slightly repelled by a magnetic field is known as_____________?
A. Relative permeability
B. Magnetic field intensity
C. Flux density
D. Magnetic potential