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Electromagnetic Field Theory

Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?

 either 1 or 2
 0
 maximum
None of these

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Electromagnetic Field Theory
Find the strength of the magnetic field when a 2m long conductor is moving with a velocity 4m/s inducing an emf of 20V.

 5T.
 2.5T.
 10T.
 0.5T.

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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that

 the inductor is non linear.
 the inductor is made of thin wire.
 the inductor has ferrite core.
 the above statement is false.

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Electromagnetic Field Theory
1 Tesla =

 1 wb/m.
 1 wb/ m2.
 1 wb- m2.
 1 wb .

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Electromagnetic Field Theory
It was suggested by _____________ that the electric field should be imagined to be divided into tubes of force containing a fixed number of line of force

 Kelvin.
 Newton.
 Faraday.
 all of above.

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Electromagnetic Field Theory
The useful magnetic flux obtainable from any closed surface is

None of these
Both A and B
Unity
Constant

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