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Microwave Communication

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

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

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Microwave Communication
When it is desired that short-range targets be clearly seen on a pulsed-radar set, it is important that the receiver and display system have

A long time constant
The restricted high-frequency response
Low-pass filters
The shortest possible time

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Microwave Communication
What do you call an attenuation that occurs over many different wavelengths of the carrier?

Rician fading
Slow fading
Rayleigh fading
Wavelength fading

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Microwave Communication
If k-factor is greater than 1, the array beam is bent

Towards the earth
Towards the ionosphere,
Away from the earth
Towards the outer space

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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
No noticeable effect
A decrease in gain
A decrease in range

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Microwave Communication
What allow microwave to pass in only one direction?

Ferrite emitter
Varactor-triac
Capacitor
RF emitter

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MORE MCQ ON Microwave Communication

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