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Electromagnetic Field Theory

Electromagnetic Field Theory
A medium is said to be isotropic when

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

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Electromagnetic Field Theory
A waveguide operated below cut off frequency can be used as

Phase shifter
An attenuator
None
An isolator

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Electromagnetic Field Theory
MUF is depend upon

11 year sun spot cycle
Electron density of the ionospheric layer
Height of ionospheric layer
Received frequency by receiver

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Electromagnetic Field Theory
Materials subjected to rapid reversals of magnetism should have

 both a and b.
 high permeability.
 low permeability.
 low hysteresis loss.

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Electromagnetic Field Theory
Two parallel plates are separated by a distance D charged by V volt. The field intensity E is given by,

 V × D²
 V / D
 V² / D
 V × D

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Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is

 infinite.
 none of tha above.
 finite.
 zero.

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MORE MCQ ON Electromagnetic Field Theory

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