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Microwave Communication
Which causes multipath or frequency selective fading?
Nearer reflector
Small reflector
Large reflector
Further reflector
Nearer reflector
Small reflector
Large reflector
Further reflector
Answer
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Related Question
Microwave Communication
The frequency of the oscillation generated by a magnetron, is mainly determined by
The ratio of the dc cathode voltage to the magnetic flux density
The dimension of each cavity resonator
The number of the cavity resonators
The flux density of the external magnet
The ratio of the dc cathode voltage to the magnetic flux density
The dimension of each cavity resonator
The number of the cavity resonators
The flux density of the external magnet
Answer
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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 reduction in horizontal resolution
A decrease in range
A decrease in gain
No noticeable effect
A reduction in horizontal resolution
A decrease in range
A decrease in gain
Answer
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Microwave Communication
Oscillators of a klystron tube are maintained
By plate-to-cathode feedback
By bunches of electrons passing the cavity grids
By circulating bunches of electrons within the cavities.
By feedback between the accelerating grid and the repeller
By plate-to-cathode feedback
By bunches of electrons passing the cavity grids
By circulating bunches of electrons within the cavities.
By feedback between the accelerating grid and the repeller
Answer
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Microwave Communication
__________ is the progressive decrease of signal strength with increasing distance.
Radiation
Modulation
Propagation
Attenuation
Radiation
Modulation
Propagation
Attenuation
Answer
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Microwave Communication
In microwave transmission using digital radio, what causes most intersymbol interference?
Slow fading
Random Doppler shift
Rayleigh fading
Delayed spreading
Slow fading
Random Doppler shift
Rayleigh fading
Delayed spreading
Answer
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