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Microwave Communication

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

Wavelength fading
Rayleigh fading
Slow fading
Rician fading

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Microwave Communication
The frequency of the oscillation generated by a magnetron, is mainly determined by

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

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Microwave Communication
Rainfall is an important factor for fading of radio waves at frequencies above

1 GHz
100 GHz
100 MHz
10 GHz

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Microwave Communication
A PPI cathode-ray tube as used on a radar set

Is used to check the percentage of modulation
Is used for receiver alignment
Indicates only the range of a target
Indicates both the range and azimuth of a target

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Microwave Communication
The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the

Electron transit time
Distributed lead inductance
Inter-electrode capacitance
Degree of emission from the cathode

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

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

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MORE MCQ ON Microwave Communication

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