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Electromagnetic Field Theory

Electromagnetic Field Theory
The attenuation in waveguide above to cut off frequency

Infinite
Zero
Very high
Very low

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Electromagnetic Field Theory
The work done by a force F = 4un - 3uy + 2uz N in giving a 1nC charge a displacement of (10 ux + 2uy - 7uz) m is

 60 nj.
 20 nj.
 40 nj.
 100 nj.

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Electromagnetic Field Theory
The emf induced in a conductor rotating in bipolar field is

 none of these.
 DC and AC both.
 AC.
 DC.

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Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of magnetic field.
 direction of emf.
 direction of electric field.
 direction of current.

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

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

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

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MORE MCQ ON Electromagnetic Field Theory

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