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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of the following is multiband HF receiving antenna?

Folded dipole
Square loop
Log-periodic
Conical horn

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Electromagnetic Field Theory
Mutual inductance between two magnetically coupled coils depends on

 permeability of core.
 cross sectional area of their common core.
 the number of their turns.
 all of above.

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Electromagnetic Field Theory
The frequency of the power wave associated with an electromagnetic wave having field as E = e-z/δ cos(ω - zδ) is given by

 ω/4π.
 ω/2π.
 ω / π.
 ω.

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Electromagnetic Field Theory
When the phase velocity of an EM wave depends on frequency in any medium the phenomenon is called

Scattering
Dispersion
Polarisation
Absorption

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Electromagnetic Field Theory
A conductor of length 1 metre moves at right angles to magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced emf in the conductor will be

 25 V.
 100 V.
 50 V.
 75 V.

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Electromagnetic Field Theory
For an inductor, current is proportional to

 none of them.
 both (A) and (B).
 voltage across the inductor.
 magnetic field.

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MORE MCQ ON Electromagnetic Field Theory

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