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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 12
1.
Tropospheric scatter is used with frequencies in the
HF
VHF
UHF
VLF
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
A Yagi antenna has a driven antenna
only
with a reflector
with one or more directors
with a reflector and one or more directors
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
The minimum height of outer atmosphere is
100 km
150 km
200 km
400 km
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
An electric charge Q is placed in a dielectric medium which of the following quantities are independent of the dielectric constant ε of the medium
electric potential V and electric field intensity E
displacement density D and displacement φ
electric field intensity E and displacement φ
electric potential V and displacement φ
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
A square corner reflector is used in
radio astronomy
tv broadcast
point to point communication
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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