Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

The radiation pattern of Hertzian dipole in the plane perpendicular to dipole is a
A:
null
B:
circle
C:
figure of eight
D:
none of the above
Answer: C
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Which of the following is not between F2 layer and D layer?
A:
E layer
B:
F1 layer
C:
G region
D:
All of the above
Answer: C
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In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as
A:
transmission efficiency
B:
front to back ratio
C:
loss coefficient
D:
none of the above
Answer: B
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MUF is depend upon
A:
electron density of the ionospheric layer
B:
11 year sun spot cycle
C:
received frequency by receiver
D:
height of ionospheric layer
Answer: C
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In H-plane metal plate lens the travelling wave front is
A:
totally retarded
B:
retarded
C:
accelerated
D:
neither accelerated nor retarded
Answer: B
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