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Microwave Communication
A traveling-wave tube (TWT) amplifies by virtue of
The energy liberated form the collector
The energy contained the cavity resonators
The effect of an external magnetic field
The absorption of energy by the signal from an electron stream
The energy liberated form the collector
The energy contained the cavity resonators
The effect of an external magnetic field
The absorption of energy by the signal from an electron stream
Answer
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Related Question
Microwave Communication
Which of the reception problems below that is not due to multipath?
Slow fading
Delayed spreading
Rayleigh fading
Random Doppler shift
Slow fading
Delayed spreading
Rayleigh fading
Random Doppler shift
Answer
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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
To focus the beam of primary electrons
All of these
As a second anode and to prevent the build-up of secondary field
To shield the electron beam from unidirectional magnetic
To focus the beam of primary electrons
All of these
As a second anode and to prevent the build-up of secondary field
Answer
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Microwave Communication
A PPI cathode-ray tube as used on a radar set
Indicates both the range and azimuth of a target
Indicates only the range of a target
Is used to check the percentage of modulation
Is used for receiver alignment
Indicates both the range and azimuth of a target
Indicates only the range of a target
Is used to check the percentage of modulation
Is used for receiver alignment
Answer
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Microwave Communication
What allow microwave to pass in only one direction?
RF emitter
Capacitor
Ferrite emitter
Varactor-triac
RF emitter
Capacitor
Ferrite emitter
Varactor-triac
Answer
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Microwave Communication
The Gunn diode oscillator
Is capable of generating continuous microwave power of the order of kilowatt
Operates over a positive resistance characteristic
Generates frequencies which are below 100 MHz
Depends on the formation of charge domain
Is capable of generating continuous microwave power of the order of kilowatt
Operates over a positive resistance characteristic
Generates frequencies which are below 100 MHz
Depends on the formation of charge domain
Answer
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