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Electromagnetic Field Theory

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

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

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

Infinite
Zero
Very low
Very high

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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the

HF
VLF
UHF
VHF

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Electromagnetic Field Theory
The radiation pattern of loop antenna is

Elliptical
Cardoid or Limacon
Circle
Semicircle

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

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Electromagnetic Field Theory
The force on a charge moving with velocity v under the influence of electric and magnetic fields is given by which one of the following

 q(E + B × V).
 q(H + V × E).
 q(E +V × H).
 q(E + V × B).

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MORE MCQ ON Electromagnetic Field Theory

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