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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
Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is

 double the field produced by one plate.
 same as that produced by one plate.
 zero.
 dependent on coordinates of field points.

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Electromagnetic Field Theory
The critical frequency of ‘F’ layer is greater than 30 MHz.

False
True

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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.

 10T.
 0.5T.
 2.5T.
 5T.

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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

Polarisation
Scattering
Absorption
Dispersion

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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be

 20 mH.
 5 mH.
 10 mH.
 15 mH.

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