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Electromagnetic Field Theory
Electromagnetic Field Theory
Exercise: Electromagnetic Field Theory
📂 Electromagnetic Field Theory
✅
Questions for: Electromagnetic Field Theory
The current distribution along a travelling wave antenna can be written in the form
A:
f
(
z
) =
f
0
e
-
j
β
z
B:
f
(
z
) =
f
0
sin β
z
C:
f
(
z
) =
f
0
D:
f
(
z
) =
f
0
cos (ω
t
- β
z
)
Answer:
D
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Post
Television signals are propagated as ground waves.
A:
True
B:
False
C:
D:
Answer:
A
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Post
Which of the following is a circularly polarized antenna?
A:
Rhombic
B:
Circular loop
C:
Helical
D:
Yagi
Answer:
C
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Post
When the height of a vertical earthed antenna is less than λ/4
A:
the base input impedance will be capacitive
B:
the base input impedance will be purely resistive
C:
the base input impedance will be inductive
D:
the base input impedance will be negligibly small
Answer:
A
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Post
If a wave is propagated in free space, it will be in nature of
A:
TE
B:
TM
C:
TEM
D:
Any one of above
Answer:
C
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