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Microwave Communication

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

Rician fading
Rayleigh fading
Slow fading
Wavelength fading

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Microwave Communication
At what position is the input signal inserted into a traveling-wave tube?

At the collector end of the helix
At the control grid of the electron gun
At the collector
At the cathode end of the helix

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Microwave Communication
Which causes multipath or frequency selective fading?

Large reflector
Further reflector
Small reflector
Nearer reflector

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Microwave Communication
A Class-S Emergency Position-Indicating Radio Beacon (E.P.I.R.B)

All of these
May be tested during the first five minutes of any hour
Must have its battery replaced after emergency use
Must be capable of floating or being secured to a survival

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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
Electron transit time
Degree of emission from the cathode
Distributed lead inductance

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Microwave Communication
Coupling into and out of a traveling-wave tube can be accompanied by a

Cavity match
All of these
Direct coax-helix match
Waveguide match

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MORE MCQ ON Microwave Communication

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