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Magnetism and Electromagnetism

Magnetism and Electromagnetism
What is the flux density in a magnetic field in which the flux in 0.1 m2 is 600 Wb?

6,000 T
6 T
600 T
600 T

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Magnetism and Electromagnetism
The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is

inversely proportional to I
proportional to 7
proportional to distance between the conductors
proportional to X

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Magnetism and Electromagnetism
Magnetism of a magnet can be destroyed by

By inductive action of another magnet
Heating
Hammering
All of the listed here

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Magnetism and Electromagnetism
The stray line of magnetic flux is defined as

A line of magnetic flux in a non-uniform field
The mean length of a ring shaped coil
A line vertical to the flux lines
A line of magnetic flux which does not follow the designed path

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Magnetism and Electromagnetism
What is the magneto-motive force in a 75-turn coil of wire when there are 4 A of current through it?

3 AT
300 AT
0.3 AT
30 AT

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Magnetism and Electromagnetism
The main constituent of permalloy is

Chromium
Nickel
Tungsten
Cobalt

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MORE MCQ ON Magnetism and Electromagnetism

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