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Microwave Communication

Microwave Communication
Which causes multipath or frequency selective fading?

Large reflector
Nearer reflector
Small reflector
Further reflector

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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

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Microwave Communication
Oscillators of a klystron tube are maintained

By circulating bunches of electrons within the cavities.
By bunches of electrons passing the cavity grids
By feedback between the accelerating grid and the repeller
By plate-to-cathode feedback

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Microwave Communication
In a radar-set receiver, the usual mixer stage is

A silicon crystal
And FET
A Rochelle salts crystal
A tunnel diode

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Microwave Communication
Klystron oscillators are most often used in the frequency range of

300 to 3000 MHz
30 to 30000 MHz
10 to 10000 MHz
3000 to 30000 MHz

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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

A reduction in horizontal resolution
A decrease in gain
A decrease in range
No noticeable effect

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MORE MCQ ON Microwave Communication

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