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Magnetism and Electromagnetism

Magnetism and Electromagnetism
The unit of flux is the same as that of

Pole strength
Resistance
Permanance
Reluctance

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Magnetism and Electromagnetism
A rectangular magnet of magnetic moment M is cut into two piece of same length, the magnetic moment of each piece will be

M
2M
M/4
M/2

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Magnetism and Electromagnetism
For a given wire-wound core, an increase in current through the coil

Decreases the flux density
Increases the flux density
Reverses the flux lines
Causes no change in flux density

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Magnetism and Electromagnetism
A permeable substance is one

which is a good conductor
through which the magnetic lines of force can pass very easily
which is a bad conductor
which is a strong magnet

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Magnetism and Electromagnetism
If the steel disk in a crankshaft position sensor has stopped with the tab in the magnet's air gap, the induced voltage

Decrease
Increase
None of the listed here
Is zero

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Magnetism and Electromagnetism
What will be the magnetic potential difference across the air gap of 2 cm length in magnetic field of 200 AT/m?

16 AT
10 AT
4 AT
8 AT

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MORE MCQ ON Magnetism and Electromagnetism

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