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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 6
46.
The troposphere extends from earth surface to a height of
15 km
90 km
150 km
200 km
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
Antenna reciprocity is put to use in
radar system
commercial broadcast
TV broadcast system
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The length of a λ/2 antenna in feet is given by the relation
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
For satellite communication, the frequency should be
equal to the critical frequency
more than the critical frequency
less than the critical frequency
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
The velocity of electromagnetic wave in free space is given by
μ0/ε0
μ0 . ε0
ε0/μ0
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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