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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 11
31.
Microwave signals follow the curvature of the earth and the phenomenon is known as
tropospheric scatter
duct propagation
Faraday effect
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
In a carbon-zinc cell the function of the depolarizer is that
it synthesizes the decomposed electrolyte
it converts the produced hydrogen into water
it absorbs the oxygen produced in the cell
it prevents the fast chemical action on the zinc container
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Induction and radiation fields are equal at a distance equal to
6λ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
The effective height of an antenna is slightly greater than physical height because
wave velocity in conductor is less than its velocity in free space
wave velocity in conductor is more than its velocity in free space
resistance of conductor is less than that of free space
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
A long periodic antenna is a
frequency independent antenna
frequency dependent antenna
directional antenna
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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