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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 5
11.
Long distance short-wave radio broadcasting uses
ground wave
ionospheric wave
direct wave
any of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
The affect of ground on radiation pattern is to
cause cancellation of radiation along the ground
produce more number of nulls
both (a) and (b)
either (a) or (b)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
If a electromagnetic signal is incident at 0° in a waveguide then at other port of waveguide we will get
zero power
∞ power
depend upon input signal strength
depend on frequency
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
An antenna having a high Q has
lower BW
higher BW
flat response
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
The polarization of dielectric materials results in
production of eddy currents
creation of electric dipoles
absorption of electrons
release of high velocity protons
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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