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Microwave Communication

Microwave Communication
Which of the reception problems below that is not due to multipath?

Slow fading
Rayleigh fading
Delayed spreading
Random Doppler shift

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Microwave Communication
Which of the following is used as a high power microwave oscillator?

Magnetron
Reflex-klystron
Thyratron
Klystron

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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

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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
Waveguide match
Direct coax-helix match

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Microwave Communication
A high-power microwave pulse of the order of megawatts can be generated by a

Gunn diode
Traveling-wave tube
Magnetron
Reflex klystron

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Microwave Communication
If the instantaneous RF potentials on the two sides of a magnetron cavity are of opposite polarity, the operation is in the

π mode
2π mode
π/4 mode
π/2 mode

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MORE MCQ ON Microwave Communication

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