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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 5
6.
Measurement of radiation resistance by reflection method is suitable for
parasitic element antennas
low frequency vertical conductor antenna
all type of antennas
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
A lossless transmission line is connected to two identical voltage source as shown in figure.

The impedance measured at the midpoint AA' is
∞
100
50
25
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
A loss less transmission line is terminated in a load which reflects a part of the incident power. The measured VSWR is 2. The percentage of the power that is reflected back is
57.73
33.33
0.11
11.11
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
A higher directivity is specified by
high gain low BW (Beamwidth)
high gain high BW
low gain high BW
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The best excited reflector from a wave guide is
horn
parabolic
biconical
corner
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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