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Microwave Communication

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

Varactor-triac
Ferrite emitter
RF emitter
Capacitor

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

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

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Microwave Communication
Calculate the effective earth’s radius if the surface refractivity is 301.

6370 mi
8493 km
8493 mmi
6370 km

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

Rayleigh fading
Wavelength fading
Rician fading
Slow fading

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

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Microwave Communication
Which of the following is used as an oscillator device in the SHF band?

Klystron tube
Thyratron tube
Both B and C
Tunnel diode

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MORE MCQ ON Microwave Communication

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