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Microwave Communication
Calculate the effective earth’s radius if the surface refractivity is 301.
6370 mi
8493 km
6370 km
8493 mmi
6370 mi
8493 km
6370 km
8493 mmi
Answer
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Related Question
Microwave Communication
A thin layer of dirt and grime coverts the reflecting surface of the parabolic dish of a radar set. The particular effect on the performance of the radar will be
No noticeable effect
A decrease in gain
A reduction in horizontal resolution
A decrease in range
No noticeable effect
A decrease in gain
A reduction in horizontal resolution
A decrease in range
Answer
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Microwave Communication
The resonant frequency of a cavity resonator depends upon
Its electrical dimensions
The mode of operation
The capacitor which tunes it
Its physical dimensions
Its electrical dimensions
The mode of operation
The capacitor which tunes it
Its physical dimensions
Answer
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Microwave Communication
A high-power microwave pulse of the order of megawatts can be generated by a
Gunn diode
Reflex klystron
Magnetron
Traveling-wave tube
Gunn diode
Reflex klystron
Magnetron
Traveling-wave tube
Answer
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Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?
Loran B: 900 kHz
Loran C: 100 kHz
Loran D: 10.2 kHz
Loran A: 1950 kHz
Loran B: 900 kHz
Loran C: 100 kHz
Loran D: 10.2 kHz
Loran A: 1950 kHz
Answer
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Microwave Communication
A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B)
May be tested during the first five minutes of any hour
Must be capable of floating or being secured to a survival
All of these
Must have its battery replaced after emergency use
May be tested during the first five minutes of any hour
Must be capable of floating or being secured to a survival
All of these
Must have its battery replaced after emergency use
Answer
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