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Microwave Communication
The highest frequency which a conventional vacuum tube oscillator can generate is not limited by the
Degree of emission from the cathode
Distributed lead inductance
Inter-electrode capacitance
Electron transit time
Degree of emission from the cathode
Distributed lead inductance
Inter-electrode capacitance
Electron transit time
Answer
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Related Question
Microwave Communication
In an SHF pulsed radar set, a reflex klystron can be used as a
Local oscillator
Single mixer stage
Transmitter oscillator
Duplexer stage
Local oscillator
Single mixer stage
Transmitter oscillator
Duplexer stage
Answer
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Microwave Communication
At what position is the input signal inserted into a traveling-wave tube?
At the cathode end of the helix
At the collector
At the collector end of the helix
At the control grid of the electron gun
At the cathode end of the helix
At the collector
At the collector end of the helix
At the control grid of the electron gun
Answer
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Microwave Communication
Calculate the effective earth’s radius if the surface refractivity is 301.
8493 km
6370 km
8493 mmi
6370 mi
8493 km
6370 km
8493 mmi
6370 mi
Answer
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Microwave Communication
A traveling-wave tube (TWT) amplifies by virtue of
The energy contained the cavity resonators
The absorption of energy by the signal from an electron stream
The energy liberated form the collector
The effect of an external magnetic field
The energy contained the cavity resonators
The absorption of energy by the signal from an electron stream
The energy liberated form the collector
The effect of an external magnetic field
Answer
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Microwave Communication
Which of the reception problems below that is not due to multipath?
Delayed spreading
Random Doppler shift
Rayleigh fading
Slow fading
Delayed spreading
Random Doppler shift
Rayleigh fading
Slow fading
Answer
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