Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

Which of the following is abnormal variation in ionosphere?
A:
Diurnal variation
B:
Seasonal variation
C:
Ionospheric storms
D:
None of the above
Answer: C
No answer description is available. Let's discuss.
Triatics are
A:
small height antenna directly mounted on jeeps, ships, etc.
B:
the towers or masts which are used as radiators
C:
the towers or masts which are not used as radiators
D:
supports for antenna conductors.
Answer: C
No answer description is available. Let's discuss.
The radio horizon for space waves is about three-fourth as for as the optical horizon.
A:
True
B:
False
C:
D:
Answer: B
No answer description is available. Let's discuss.
Radar antennas are usually
A:
dipoles
B:
yagi antennas
C:
parabolic dishes
D:
none of the above
Answer: C
No answer description is available. Let's discuss.
A waveguide behave as
A:
high Pass filter
B:
low Pass filter
C:
band Pass filter
D:
all Pass filter
Answer: A
No answer description is available. Let's discuss.
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