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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 4
31.
The effective refraction index of the ionosphere for radio wave is
more than unity
less than unity
equal to unity
either more or less than unity depending on the electron concentration
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
For space propagation, what will be the electric field strength at receiving antenna
30 WTGT
173WT
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
A medium is said to be isotropic when
∈ = 0
∈ = μ
∈ = σ
∈ is scalar constant
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
The radiation resistance of a resonant long wire antenna of half wavelength (λ/2) is given
73 Ω
120 p
377 Ω
7.3 Ω
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
A uniform wave have components
in the perpendicular direction E existing while H is zero
in the direction of propagation E existing while H is zero
E and H are zero in direction perpendicular to direction of propagation
E and H existing only in direction perpendicular to direction of propagation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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