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Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?
Loran A: 1950 kHz
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
Answer
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Related Question
Microwave Communication
Oscillators of a klystron tube are maintained
By plate-to-cathode feedback
By bunches of electrons passing the cavity grids
By feedback between the accelerating grid and the repeller
By circulating bunches of electrons within the cavities.
By plate-to-cathode feedback
By bunches of electrons passing the cavity grids
By feedback between the accelerating grid and the repeller
By circulating bunches of electrons within the cavities.
Answer
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Microwave Communication
__________ is the progressive decrease of signal strength with increasing distance.
Radiation
Attenuation
Propagation
Modulation
Radiation
Attenuation
Propagation
Modulation
Answer
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Microwave Communication
If the duration of the radar transmitted pulse, on a particular range of operation, is increased, the required bandwidth of the receiver’s IF amplifiers
May be decreased
Must remain as before
Must be doubled
Must be increased
May be decreased
Must remain as before
Must be doubled
Must be increased
Answer
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Microwave Communication
What do you call an attenuation that occurs over many different wavelengths of the carrier?
Slow fading
Wavelength fading
Rician fading
Rayleigh fading
Slow fading
Wavelength fading
Rician fading
Rayleigh fading
Answer
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Microwave Communication
A high-power microwave pulse of the order of megawatts can be generated by a
Magnetron
Reflex klystron
Gunn diode
Traveling-wave tube
Magnetron
Reflex klystron
Gunn diode
Traveling-wave tube
Answer
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