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Magnetism and Electromagnetism

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

Is zero
Increase
None of the listed here
Decrease

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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

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

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Magnetism and Electromagnetism
Ferrites are a sub-group of

Ferri-magnetic material
Ferro magnetic material
Paramagnetic material
Non-magnetic materials

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Magnetism and Electromagnetism
Gilbert is a unit of

electromotive force
magnetomotive force
permittivity
conductance

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Magnetism and Electromagnetism
How does the magnetic compass needle behave in a magnetic field?

It starts rotating
None of the listed here
It assures a position which follows a line of magnetic flux
It assures a position right angle to magnetic field

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Magnetism and Electromagnetism
An electromagnetic field exists only when there is

decreasing current
an increasing current
current
voltage

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