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Microwave Communication

Microwave Communication
__________ is the progressive decrease of signal strength with increasing distance.

Propagation
Attenuation
Radiation
Modulation

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Microwave Communication
It is possible to increase the maximum range of a radar equipment by

All of these
Raising the peak power of the transmitter
Lowering the pulse frequency
Narrowing the beam width and increasing the pulse duration

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

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

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Microwave Communication
Oscillators of a klystron tube are maintained

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

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Microwave Communication
The aquadag coating on the inside of PPI tube is used

To focus the beam of primary electrons
To shield the electron beam from unidirectional magnetic
As a second anode and to prevent the build-up of secondary field
All of these

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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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MORE MCQ ON Microwave Communication

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