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Magnetism and Electromagnetism

The direction of magnetic lines of force is________________?

August 11, 2021December 16, 2018 by admin
The direction of magnetic lines of force is________________?

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

Categories Magnetism and Electromagnetism Leave a comment

A permeable substance is one_____________?

August 11, 2021December 16, 2018 by admin
A permeable substance is one_____________?

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

Categories Magnetism and Electromagnetism Leave a comment

A magnetic field exists around____________?

August 11, 2021December 16, 2018 by admin
A magnetic field exists around____________?

A. iron
B. copper
C. aluminium
D. moving charges

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The materials having low retentivity are suitable for making_____________?

August 11, 2021December 16, 2018 by admin
The materials having low retentivity are suitable for making_____________?

A. weak magnets
B. temporary magnets
C. permanent magnets
D. none of the above

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Tesla is a unit of_____________?

August 11, 2021December 16, 2018 by admin
Tesla is a unit of_____________?

A. field strength
B. inductance
C. flux density
D. flux

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Ferrites are materials

August 11, 2021December 16, 2018 by admin
Ferrites are materials

A. paramagnetic
B. diamagnetic
C. ferromagnetic
D. none of the above

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The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is________________?

August 11, 2021December 16, 2018 by admin
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is________________?

A. proportional to 7
B. proportional to X
C. proportional to distance between the conductors
D. inversely proportional to I

Categories Magnetism and Electromagnetism Leave a comment

Air gap has_________eluctance as compared to iron or steel path?

August 11, 2021December 16, 2018 by admin
Air gap has_________eluctance as compared to iron or steel path?

A. little
B. lower
C. higher
D. zero

Categories Magnetism and Electromagnetism Leave a comment

Which of the following is a vector quantity ?

August 11, 2021December 16, 2018 by admin
Which of the following is a vector quantity ?

A. Relative permeability
B. Magnetic field intensity
C. Flux density
D. Magnetic potential

Categories Magnetism and Electromagnetism Leave a comment

A material which is slightly repelled by a magnetic field is known as_____________?

August 11, 2021December 16, 2018 by admin
A material which is slightly repelled by a magnetic field is known as_____________?

A. ferromagnetic material
B. diamagnetic material
C. paramagnetic material
D. conducting material

Categories Magnetism and Electromagnetism Leave a comment
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