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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 5
46.
When microwave signals follow the curvature of the earth, this is known as
the Faraday effect
ducting
tropospheric scatter
ionospheric reflection
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Characteristic wave impedance is
ε/μ
(ε/μ)1/2
Ex/Hy
Hy/Ex
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The attenuation factor a and phase shift factor β for a wave propagated in a good dielectric having are given by
a = μ/ε , β = ωμ/ε
a = β = μ/ε
a = μ/ε , β = ωμ/ε
a = β = ωμ/ε
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Consider isotropic radiator radiating a power of 1 watt. At a distance of 1 metre, the power per unit area with equal
1 watt/m2
4p watt/m2
1/4p watt/m2
2p watt/m2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Cassegrain feed is used with a parabolic reflection to
reduce the size of the main reflector
increase the gain of the system
increase the beamwidth of the system
allow the feed to be placed at a convenient point
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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