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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 11
26.
Ground wave propagation is useful for
microwave
medium wave
short wave
long distance
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Radiowaves are electromagnetic waves having frequency range
0.001 to 50 H
0.001 to 50 kHz
0.002 to 50 MHz
0.001 to 1016 Hz
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
When a line of any odd multiple of a quarter wavelength is short-circuited it represents
unit impedance
infinite impedance
zero impedance
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
An antenna is considered to be in free space where its height above the ground is
λ
2λ
less than 3λ
more than 5λ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In waveguide Degenerate modes are
two mode having same cut off frequency
two mode having same power
two mode having same phase velocity
it is a hypothetical mode
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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