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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of following is not a unit of flux?

 All of above.
 Telsa.
 Weber.
 Maxwell.

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Electromagnetic Field Theory
Whenever the magnetic flux changes with respect to an electric conductor or a coil, an EMF is induced in the conductor is Faraday’s

 first law
 third law
 second law
 fourth law

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Electromagnetic Field Theory
In order to minimize loss due to hysteresis the magnetic material should have

 high resistivity.
 small B-H loop area.
 high hysteresis coefficient.
 large coercivity.

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Electromagnetic Field Theory
Magnetic flux density emerging out of a closed surface is

 infinite.
 zero.
 depends on magnetic movements inside the closed surface.
 depends on magnetic movements outside the closed surface

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Electromagnetic Field Theory
The force required to seperate two surfaces with a contact area measuring 5 cm by 6 cm, when flux density normal to the surface is 0.8 tesla, will be

 76.4 N.
 7640 N.
 764 N.
 76400 N.

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Electromagnetic Field Theory
MUF is depend upon

Electron density of the ionospheric layer
Received frequency by receiver
Height of ionospheric layer
11 year sun spot cycle

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MORE MCQ ON Electromagnetic Field Theory

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