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Magnetism and Electromagnetism

Magnetism and Electromagnetism
One telsa is equal to

1 Wb/m
1 Wb/mm²
1 Wb/m²
1 mWb/m²

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Magnetism and Electromagnetism
A square cross-sectional magnet has a pole strength of 1 x 10 Wb and cross sectional area of 20 mm x 20 mm. What is the strength at a distance of 100 mm from the unit pole in air ?

6338 N/Wb
63.38 N/Wb
63380 N/Wb
633.8 N/Wb

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Magnetism and Electromagnetism
Reciprocal of permeability is

Permeability
Susceptibility
conductance
Reluctivity

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Magnetism and Electromagnetism
A keeper is used to

Change the direction of magnetic lines
Restore lost flux
Amplify flux
Provide a closed path for flux

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

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

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Magnetism and Electromagnetism
A magnetic field exists around

Copper
Iron
Moving Charges
Aluminium

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MORE MCQ ON Magnetism and Electromagnetism

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