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Electronics and Communication Engineering - Microwave Communication

Exercise : Microwave Communication - Section 5
36.
Consider the following statements about instrument landing system of aircraft
  1. It ensures correct landing under conditions of low visibility.
  2. It consists of runaway localizer, glide path equipment and marker beacons.
  3. It is basically a blind landing system.
Which of above statements are correct?
All
1 and 2 only
1 and 3 only
2 only
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
Effect of loading of line is
increase in Z0, a and β
increase in Z0 and β but decrease in a
decrease in Z0, a and β
decrease in Z0 and β but increase in a
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
Which mode has the minimum cutoff frequency in rectangular wave guides?
TE11
TE10
TE01
TE20
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
As compared to dimensions of most feeds, the skin depth at microwave frequencies is
of the same magnitude
much larger
much smaller
either (b) or (c)
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
In microwave communication links the fading due to rain occurs. The methods to solve this problem include
antenna replacement and feed correction
amplitude trimming and phase correction
polarization shifting and code diversity
path diversity and frequency diversity
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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