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Microwave Communication

Microwave Communication
In an SHF pulsed radar set, a reflex klystron can be used as a

Single mixer stage
Transmitter oscillator
Local oscillator
Duplexer stage

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Microwave Communication
Which of the following operating frequencies is used for the modern loran navigational system?

Loran A: 1950 kHz
Loran B: 900 kHz
Loran D: 10.2 kHz
Loran C: 100 kHz

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

Varactor-triac
Ferrite emitter
Capacitor
RF emitter

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Microwave Communication
The aquadag coating on the inside of PPI tube is used

All of these
To focus the beam of primary electrons
To shield the electron beam from unidirectional magnetic
As a second anode and to prevent the build-up of secondary field

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Microwave Communication
A magnetron is operated at a duty cycle of 0.001. It has a peak power output of 100 kilo-watts. Its average power is

1,000 watts
1,000,000 watts
10,000 watts
100 watts

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Microwave Communication
In microwave transmission using digital radio, what causes most intersymbol interference?

Rayleigh fading
Delayed spreading
Slow fading
Random Doppler shift

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MORE MCQ ON Microwave Communication

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