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Electromagnetic Field Theory

Electromagnetic Field Theory
A medium is said to be isotropic when

 ∈ = μσ.
 ∈ = μ.
 ∈ is a scalar constant.
 ∈ is zero.

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Electromagnetic Field Theory
For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is

 2/3.
  – ½.
 1/3.
 – 1/3.

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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
Absorption
Polarisation
Dispersion

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Electromagnetic Field Theory
Which of this statement is not characteristic of a static magnetic field

 it has no sink or sources.
 it is conservative.
 magnetic flux lines are always closed.
 it is solenoidal.

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Electromagnetic Field Theory
If a and b are the dimensions of waveguide then

a = 2b
a = 3b
a = b
a = b/4

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Electromagnetic Field Theory
An electric field on a place described by its potential V = 20 (r -1 + r-2) where r is the distance from the source. The field is due to

 A monopole.
 A quardra pole.
 A dipole.
 Both of A and B.

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MORE MCQ ON Electromagnetic Field Theory

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